1542342331 has 8 divisors (see below), whose sum is σ = 1552143600. Its totient is φ = 1532572512.

The previous prime is 1542342283. The next prime is 1542342337. The reversal of 1542342331 is 1332432451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1542342331 - 2¹⁷ = 1542211259 is a prime.

It is a super-2 number, since 2×1542342331² = 4757639731989027122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1542342331.

It is not an unprimeable number, because it can be changed into a prime (1542342337) 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, 94716 + ... + 109798.

It is an arithmetic number, because the mean of its divisors is an integer number (194017950).

Almost surely, 2^1542342331 is an apocalyptic number.

1542342331 is a deficient number, since it is larger than the sum of its proper divisors (9801269).

1542342331 is a wasteful number, since it uses less digits than its factorization.

1542342331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15725.

The product of its digits is 8640, while the sum is 28.

The square root of 1542342331 is about 39272.6664615480. Note that the first 3 decimals coincide. The cubic root of 1542342331 is about 1155.3855352321.

Adding to 1542342331 its reverse (1332432451), we get a palindrome (2874774782).

The spelling of 1542342331 in words is "one billion, five hundred forty-two million, three hundred forty-two thousand, three hundred thirty-one".