2642401457 has 2 divisors, whose sum is σ = 2642401458. Its totient is φ = 2642401456.

The previous prime is 2642401423. The next prime is 2642401493. The reversal of 2642401457 is 7541042462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2636206336 + 6195121 = 51344^2 + 2489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2642401457 is a prime.

It is not a weakly prime, because it can be changed into another prime (2642401417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321200728 + 1321200729.

It is an arithmetic number, because the mean of its divisors is an integer number (1321200729).

Almost surely, 2^2642401457 is an apocalyptic number.

It is an amenable number.

2642401457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642401457 is an equidigital number, since it uses as much as digits as its factorization.

2642401457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 2642401457 is about 51404.2941494191. The cubic root of 2642401457 is about 1382.5035867829.

The spelling of 2642401457 in words is "two billion, six hundred forty-two million, four hundred one thousand, four hundred fifty-seven".