1042220231 has 8 divisors (see below), whose sum is σ = 1126361040. Its totient is φ = 958646592.

The previous prime is 1042220227. The next prime is 1042220233. The reversal of 1042220231 is 1320222401.

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

It is a cyclic number.

It is not a de Polignac number, because 1042220231 - 2² = 1042220227 is a prime.

It is a super-2 number, since 2×1042220231² = 2172446019811386722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042220233) 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, 137966 + ... + 145323.

It is an arithmetic number, because the mean of its divisors is an integer number (140795130).

Almost surely, 2^1042220231 is an apocalyptic number.

1042220231 is a deficient number, since it is larger than the sum of its proper divisors (84140809).

1042220231 is a wasteful number, since it uses less digits than its factorization.

1042220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283585.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1042220231 is about 32283.4358611347. The cubic root of 1042220231 is about 1013.8798682679.

Adding to 1042220231 its reverse (1320222401), we get a palindrome (2362442632).

The spelling of 1042220231 in words is "one billion, forty-two million, two hundred twenty thousand, two hundred thirty-one".