1553039442 has 96 divisors (see below), whose sum is σ = 3720038400. Its totient is φ = 466066656.

The previous prime is 1553039413. The next prime is 1553039497. The reversal of 1553039442 is 2449303551.

1553039442 is a `hidden beast` number, since 155 + 30 + 39 + 442 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1553039397 and 1553039406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1407463 + ... + 1408565.

It is an arithmetic number, because the mean of its divisors is an integer number (38750400).

Almost surely, 2^1553039442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1553039442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1860019200).

1553039442 is an abundant number, since it is smaller than the sum of its proper divisors (2166998958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1553039442 is a wasteful number, since it uses less digits than its factorization.

1553039442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1329 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1553039442 is about 39408.6214171468. The cubic root of 1553039442 is about 1158.0504913240.

The spelling of 1553039442 in words is "one billion, five hundred fifty-three million, thirty-nine thousand, four hundred forty-two".