1042142369 has 2 divisors, whose sum is σ = 1042142370. Its totient is φ = 1042142368.

The previous prime is 1042142363. The next prime is 1042142371. The reversal of 1042142369 is 9632412401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 980441344 + 61701025 = 31312^2 + 7855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042142369 is a prime.

It is a super-2 number, since 2×1042142369² = 2172121434529864322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1042142371, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1042142363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521071184 + 521071185.

It is an arithmetic number, because the mean of its divisors is an integer number (521071185).

Almost surely, 2^1042142369 is an apocalyptic number.

It is an amenable number.

1042142369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042142369 is an equidigital number, since it uses as much as digits as its factorization.

1042142369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1042142369 is about 32282.2299260754. The cubic root of 1042142369 is about 1013.8546193880.

The spelling of 1042142369 in words is "one billion, forty-two million, one hundred forty-two thousand, three hundred sixty-nine".