29972142 has 24 divisors (see below), whose sum is σ = 65172744. Its totient is φ = 9954864.

The previous prime is 29972123. The next prime is 29972143. The reversal of 29972142 is 24127992.

It is a junction number, because it is equal to n+sod(n) for n = 29972097 and 29972106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29972143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2433 + ... + 8115.

It is an arithmetic number, because the mean of its divisors is an integer number (2715531).

Almost surely, 2^29972142 is an apocalyptic number.

29972142 is an abundant number, since it is smaller than the sum of its proper divisors (35200602).

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

29972142 is a wasteful number, since it uses less digits than its factorization.

29972142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5984 (or 5981 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 29972142 is about 5474.6819085678. The cubic root of 29972142 is about 310.6270416058.

The spelling of 29972142 in words is "twenty-nine million, nine hundred seventy-two thousand, one hundred forty-two".