1142400431 has 2 divisors, whose sum is σ = 1142400432. Its totient is φ = 1142400430.

The previous prime is 1142400397. The next prime is 1142400449. The reversal of 1142400431 is 1340042411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1142400431 - 2⁶ = 1142400367 is a prime.

It is a super-2 number, since 2×1142400431² = 2610157489497971522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142400031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571200215 + 571200216.

It is an arithmetic number, because the mean of its divisors is an integer number (571200216).

Almost surely, 2^1142400431 is an apocalyptic number.

1142400431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142400431 is an equidigital number, since it uses as much as digits as its factorization.

1142400431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1142400431 is about 33799.4146546948. The cubic root of 1142400431 is about 1045.3766279012.

Adding to 1142400431 its reverse (1340042411), we get a palindrome (2482442842).

The spelling of 1142400431 in words is "one billion, one hundred forty-two million, four hundred thousand, four hundred thirty-one".