1542269139 has 16 divisors (see below), whose sum is σ = 2101435392. Its totient is φ = 1005668928.

The previous prime is 1542269129. The next prime is 1542269147. The reversal of 1542269139 is 9319622451.

It is not a de Polignac number, because 1542269139 - 2⁴ = 1542269123 is a prime.

It is a super-2 number, since 2×1542269139² = 4757188194223602642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1542269139.

It is not an unprimeable number, because it can be changed into a prime (1542269129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346482 + ... + 350904.

It is an arithmetic number, because the mean of its divisors is an integer number (131339712).

Almost surely, 2^1542269139 is an apocalyptic number.

1542269139 is a deficient number, since it is larger than the sum of its proper divisors (559166253).

1542269139 is a wasteful number, since it uses less digits than its factorization.

1542269139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6946.

The product of its digits is 116640, while the sum is 42.

The square root of 1542269139 is about 39271.7346064571. The cubic root of 1542269139 is about 1155.3672586333.

The spelling of 1542269139 in words is "one billion, five hundred forty-two million, two hundred sixty-nine thousand, one hundred thirty-nine".