1008657442 has 16 divisors (see below), whose sum is σ = 1644322680. Its totient is φ = 461261952.

The previous prime is 1008657401. The next prime is 1008657449. The reversal of 1008657442 is 2447568001.

It can be written as a sum of positive squares in 4 ways, for example, as 724094281 + 284563161 = 26909^2 + 16869^2 .

It is not an unprimeable number, because it can be changed into a prime (1008657449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175123 + ... + 180790.

Almost surely, 2^1008657442 is an apocalyptic number.

1008657442 is a deficient number, since it is larger than the sum of its proper divisors (635665238).

1008657442 is a wasteful number, since it uses less digits than its factorization.

1008657442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356037.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 1008657442 is about 31759.3677833801. The cubic root of 1008657442 is about 1002.8775259026.

It can be divided in two parts, 10086 and 57442, that added together give a triangular number (67528 = T₃₆₇).

The spelling of 1008657442 in words is "one billion, eight million, six hundred fifty-seven thousand, four hundred forty-two".