1242228531 has 8 divisors (see below), whose sum is σ = 1743478720. Its totient is φ = 784565352.

The previous prime is 1242228503. The next prime is 1242228577. The reversal of 1242228531 is 1358222421.

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

It is not a de Polignac number, because 1242228531 - 2⁶ = 1242228467 is a prime.

It is a super-2 number, since 2×1242228531² = 3086263446460835922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242221531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10896685 + ... + 10896798.

It is an arithmetic number, because the mean of its divisors is an integer number (217934840).

Almost surely, 2^1242228531 is an apocalyptic number.

1242228531 is a deficient number, since it is larger than the sum of its proper divisors (501250189).

1242228531 is a wasteful number, since it uses less digits than its factorization.

1242228531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21793505.

The product of its digits is 7680, while the sum is 30.

The square root of 1242228531 is about 35245.2625327149. The cubic root of 1242228531 is about 1074.9802862078.

The spelling of 1242228531 in words is "one billion, two hundred forty-two million, two hundred twenty-eight thousand, five hundred thirty-one".