742224878 has 8 divisors (see below), whose sum is σ = 1149251520. Its totient is φ = 359141040.

The previous prime is 742224877. The next prime is 742224887. The reversal of 742224878 is 878422247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×742224878² = 1101795539044229768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742224871) 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, 5985623 + ... + 5985746.

It is an arithmetic number, because the mean of its divisors is an integer number (143656440).

Almost surely, 2^742224878 is an apocalyptic number.

742224878 is a deficient number, since it is larger than the sum of its proper divisors (407026642).

742224878 is a wasteful number, since it uses less digits than its factorization.

742224878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11971402.

The product of its digits is 401408, while the sum is 44.

The square root of 742224878 is about 27243.8043965963. The cubic root of 742224878 is about 905.4097543162.

The spelling of 742224878 in words is "seven hundred forty-two million, two hundred twenty-four thousand, eight hundred seventy-eight".