1542539240 has 32 divisors (see below), whose sum is σ = 3786233760. Its totient is φ = 560923200.

The previous prime is 1542539231. The next prime is 1542539249. The reversal of 1542539240 is 429352451.

It is an interprime number because it is at equal distance from previous prime (1542539231) and next prime (1542539249).

It is a self number, because there is not a number n which added to its sum of digits gives 1542539240.

It is not an unprimeable number, because it can be changed into a prime (1542539249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1752446 + ... + 1753325.

It is an arithmetic number, because the mean of its divisors is an integer number (118319805).

Almost surely, 2^1542539240 is an apocalyptic number.

1542539240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1542539240 is an abundant number, since it is smaller than the sum of its proper divisors (2243694520).

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

1542539240 is a wasteful number, since it uses less digits than its factorization.

1542539240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505793 (or 3505789 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1542539240 is about 39275.1733287073. The cubic root of 1542539240 is about 1155.4347020361.

The spelling of 1542539240 in words is "one billion, five hundred forty-two million, five hundred thirty-nine thousand, two hundred forty".