1542342431 has 8 divisors (see below), whose sum is σ = 1763478144. Its totient is φ = 1321407000.

The previous prime is 1542342427. The next prime is 1542342509. The reversal of 1542342431 is 1342432451.

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 1542342431 - 2² = 1542342427 is a prime.

It is a super-2 number, since 2×1542342431² = 4757640348925979522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1542342394 and 1542342403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542342421) 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, 33185 + ... + 64698.

It is an arithmetic number, because the mean of its divisors is an integer number (220434768).

Almost surely, 2^1542342431 is an apocalyptic number.

1542342431 is a deficient number, since it is larger than the sum of its proper divisors (221135713).

1542342431 is an equidigital number, since it uses as much as digits as its factorization.

1542342431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100141.

The product of its digits is 11520, while the sum is 29.

The square root of 1542342431 is about 39272.6677346981. The cubic root of 1542342431 is about 1155.3855602025.

Adding to 1542342431 its reverse (1342432451), we get a palindrome (2884774882).

The spelling of 1542342431 in words is "one billion, five hundred forty-two million, three hundred forty-two thousand, four hundred thirty-one".