1551504042 has 48 divisors (see below), whose sum is σ = 3756654720. Its totient is φ = 458683200.

The previous prime is 1551504029. The next prime is 1551504047. The reversal of 1551504042 is 2404051551.

1551504042 is a `hidden beast` number, since 155 + 1 + 504 + 0 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1551503997 and 1551504015.

It is not an unprimeable number, because it can be changed into a prime (1551504047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87442 + ... + 103677.

It is an arithmetic number, because the mean of its divisors is an integer number (78263640).

Almost surely, 2^1551504042 is an apocalyptic number.

1551504042 is an abundant number, since it is smaller than the sum of its proper divisors (2205150678).

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

1551504042 is a wasteful number, since it uses less digits than its factorization.

1551504042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191179 (or 191176 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1551504042 is about 39389.1360910594. The cubic root of 1551504042 is about 1157.6687330426.

Adding to 1551504042 its reverse (2404051551), we get a palindrome (3955555593).

The spelling of 1551504042 in words is "one billion, five hundred fifty-one million, five hundred four thousand, forty-two".