1042640351 has 2 divisors, whose sum is σ = 1042640352. Its totient is φ = 1042640350.

The previous prime is 1042640321. The next prime is 1042640363. The reversal of 1042640351 is 1530462401.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042640351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1042640351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042640321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521320175 + 521320176.

It is an arithmetic number, because the mean of its divisors is an integer number (521320176).

Almost surely, 2^1042640351 is an apocalyptic number.

1042640351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042640351 is an equidigital number, since it uses as much as digits as its factorization.

1042640351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1042640351 is about 32289.9419479193. The cubic root of 1042640351 is about 1014.0160819575.

The spelling of 1042640351 in words is "one billion, forty-two million, six hundred forty thousand, three hundred fifty-one".