2657371042 has 4 divisors (see below), whose sum is σ = 3986056566. Its totient is φ = 1328685520.

The previous prime is 2657371009. The next prime is 2657371049. The reversal of 2657371042 is 2401737562.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2344399561 + 312971481 = 48419^2 + 17691^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2657370992 and 2657371010.

It is not an unprimeable number, because it can be changed into a prime (2657371049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664342759 + ... + 664342762.

Almost surely, 2^2657371042 is an apocalyptic number.

2657371042 is a deficient number, since it is larger than the sum of its proper divisors (1328685524).

2657371042 is a wasteful number, since it uses less digits than its factorization.

2657371042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328685523.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 2657371042 is about 51549.6948778555. The cubic root of 2657371042 is about 1385.1093662632.

The spelling of 2657371042 in words is "two billion, six hundred fifty-seven million, three hundred seventy-one thousand, forty-two".