1542665404 has 24 divisors (see below), whose sum is σ = 3247717760. Its totient is φ = 626345136.

The previous prime is 1542665387. The next prime is 1542665437. The reversal of 1542665404 is 4045662451.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1449342 + ... + 1450405.

Almost surely, 2^1542665404 is an apocalyptic number.

1542665404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1542665404 is an abundant number, since it is smaller than the sum of its proper divisors (1705052356).

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

1542665404 is a wasteful number, since it uses less digits than its factorization.

1542665404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899777 (or 2899775 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 1542665404 is about 39276.7794504590. The cubic root of 1542665404 is about 1155.4662021077.

The spelling of 1542665404 in words is "one billion, five hundred forty-two million, six hundred sixty-five thousand, four hundred four".