29442531 has 4 divisors (see below), whose sum is σ = 39256712. Its totient is φ = 19628352.

The previous prime is 29442509. The next prime is 29442557. The reversal of 29442531 is 13524492.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 29442531 - 2⁷ = 29442403 is a prime.

It is a super-2 number, since 2×29442531² = 1733725263371922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29442031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4907086 + ... + 4907091.

It is an arithmetic number, because the mean of its divisors is an integer number (9814178).

Almost surely, 2^29442531 is an apocalyptic number.

29442531 is a deficient number, since it is larger than the sum of its proper divisors (9814181).

29442531 is an equidigital number, since it uses as much as digits as its factorization.

29442531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9814180.

The product of its digits is 8640, while the sum is 30.

The square root of 29442531 is about 5426.0972162319. The cubic root of 29442531 is about 308.7865536117.

The spelling of 29442531 in words is "twenty-nine million, four hundred forty-two thousand, five hundred thirty-one".