1057615442 has 16 divisors (see below), whose sum is σ = 1767369240. Its totient is φ = 471297792.

The previous prime is 1057615409. The next prime is 1057615453. The reversal of 1057615442 is 2445167501.

It is a Cunningham number, because it is equal to 32521²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 554555401 + 503060041 = 23549^2 + 22429^2 .

It is a super-2 number, since 2×1057615442² = 2237100846313710728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700583 + ... + 702090.

Almost surely, 2^1057615442 is an apocalyptic number.

1057615442 is a deficient number, since it is larger than the sum of its proper divisors (709753798).

1057615442 is a wasteful number, since it uses less digits than its factorization.

1057615442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402717.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 1057615442 is about 32521.0000153747. Note that the first 4 decimals coincide. The cubic root of 1057615442 is about 1018.8476804879.

The spelling of 1057615442 in words is "one billion, fifty-seven million, six hundred fifteen thousand, four hundred forty-two".