1553872042 has 16 divisors (see below), whose sum is σ = 2433203712. Its totient is φ = 742833520.

The previous prime is 1553872039. The next prime is 1553872049. The reversal of 1553872042 is 2402783551.

It is a junction number, because it is equal to n+sod(n) for n = 1553871992 and 1553872010.

It is not an unprimeable number, because it can be changed into a prime (1553872049) 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, 125703 + ... + 137509.

It is an arithmetic number, because the mean of its divisors is an integer number (152075232).

Almost surely, 2^1553872042 is an apocalyptic number.

1553872042 is a deficient number, since it is larger than the sum of its proper divisors (879331670).

1553872042 is a wasteful number, since it uses less digits than its factorization.

1553872042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14693.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 1553872042 is about 39419.1836800307. The cubic root of 1553872042 is about 1158.2574018419.

The spelling of 1553872042 in words is "one billion, five hundred fifty-three million, eight hundred seventy-two thousand, forty-two".