742227131 has 4 divisors (see below), whose sum is σ = 767821200. Its totient is φ = 716633064.

The previous prime is 742227127. The next prime is 742227133. The reversal of 742227131 is 131722247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131722247 = 47 ⋅2802601.

It is a cyclic number.

It is not a de Polignac number, because 742227131 - 2² = 742227127 is a prime.

It is a super-2 number, since 2×742227131² = 1101802227984982322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 25594039 = 742227131 / (7 + 4 + 2 + 2 + 2 + 7 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742227094 and 742227103.

It is not an unprimeable number, because it can be changed into a prime (742227133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12796991 + ... + 12797048.

It is an arithmetic number, because the mean of its divisors is an integer number (191955300).

Almost surely, 2^742227131 is an apocalyptic number.

742227131 is a deficient number, since it is larger than the sum of its proper divisors (25594069).

742227131 is a wasteful number, since it uses less digits than its factorization.

742227131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25594068.

The product of its digits is 4704, while the sum is 29.

The square root of 742227131 is about 27243.8457454156. The cubic root of 742227131 is about 905.4106704295.

Adding to 742227131 its reverse (131722247), we get a palindrome (873949378).

The spelling of 742227131 in words is "seven hundred forty-two million, two hundred twenty-seven thousand, one hundred thirty-one".