1542920172 has 12 divisors (see below), whose sum is σ = 3600147096. Its totient is φ = 514306720.

The previous prime is 1542920131. The next prime is 1542920173. The reversal of 1542920172 is 2710292451.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1542920173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64288329 + ... + 64288352.

It is an arithmetic number, because the mean of its divisors is an integer number (300012258).

Almost surely, 2^1542920172 is an apocalyptic number.

1542920172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1542920172 is an abundant number, since it is smaller than the sum of its proper divisors (2057226924).

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

1542920172 is a wasteful number, since it uses less digits than its factorization.

1542920172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128576688 (or 128576686 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1542920172 is about 39280.0225560017. The cubic root of 1542920172 is about 1155.5298062241.

The spelling of 1542920172 in words is "one billion, five hundred forty-two million, nine hundred twenty thousand, one hundred seventy-two".