1542542240 has 24 divisors (see below), whose sum is σ = 3644256420. Its totient is φ = 617016832.

The previous prime is 1542542213. The next prime is 1542542251. The reversal of 1542542240 is 422452451.

It can be written as a sum of positive squares in 2 ways, for example, as 1446737296 + 95804944 = 38036^2 + 9788^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4820285 + ... + 4820604.

Almost surely, 2^1542542240 is an apocalyptic number.

1542542240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1542542240 is an abundant number, since it is smaller than the sum of its proper divisors (2101714180).

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

1542542240 is an equidigital number, since it uses as much as digits as its factorization.

1542542240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9640904 (or 9640896 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 1542542240 is about 39275.2115207544. The cubic root of 1542542240 is about 1155.4354510828.

Adding to 1542542240 its reverse (422452451), we get a palindrome (1964994691).

The spelling of 1542542240 in words is "one billion, five hundred forty-two million, five hundred forty-two thousand, two hundred forty".