20120442 has 16 divisors (see below), whose sum is σ = 40301472. Its totient is φ = 6696720.

The previous prime is 20120437. The next prime is 20120447. The reversal of 20120442 is 24402102.

It is an interprime number because it is at equal distance from previous prime (20120437) and next prime (20120447).

It is not an unprimeable number, because it can be changed into a prime (20120447) 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, 2592 + ... + 6852.

It is an arithmetic number, because the mean of its divisors is an integer number (2518842).

Almost surely, 2^20120442 is an apocalyptic number.

20120442 is an abundant number, since it is smaller than the sum of its proper divisors (20181030).

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

20120442 is a wasteful number, since it uses less digits than its factorization.

20120442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 20120442 is about 4485.5815676454. The cubic root of 20120442 is about 271.9855546683.

Adding to 20120442 its reverse (24402102), we get a palindrome (44522544).

The spelling of 20120442 in words is "twenty million, one hundred twenty thousand, four hundred forty-two".