20029542 has 24 divisors (see below), whose sum is σ = 43379784. Its totient is φ = 6162624.

The previous prime is 20029531. The next prime is 20029547. The reversal of 20029542 is 24592002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20029547) 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, 8863 + ... + 10890.

It is an arithmetic number, because the mean of its divisors is an integer number (1807491).

Almost surely, 2^20029542 is an apocalyptic number.

20029542 is an abundant number, since it is smaller than the sum of its proper divisors (23350242).

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

20029542 is a wasteful number, since it uses less digits than its factorization.

20029542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19784 (or 19771 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20029542 is about 4475.4376322322. The cubic root of 20029542 is about 271.5753447846.

The spelling of 20029542 in words is "twenty million, twenty-nine thousand, five hundred forty-two".