55542142420 has 48 divisors (see below), whose sum is σ = 118250814528. Its totient is φ = 21911834880.

The previous prime is 55542142391. The next prime is 55542142421. The reversal of 55542142420 is 2424124555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55542142421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362032 + ... + 492088.

It is an arithmetic number, because the mean of its divisors is an integer number (2463558636).

Almost surely, 2^55542142420 is an apocalyptic number.

It is an amenable number.

55542142420 is an abundant number, since it is smaller than the sum of its proper divisors (62708672108).

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

55542142420 is a wasteful number, since it uses less digits than its factorization.

55542142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130360 (or 130358 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 55542142420 its reverse (2424124555), we get a palindrome (57966266975).

The spelling of 55542142420 in words is "fifty-five billion, five hundred forty-two million, one hundred forty-two thousand, four hundred twenty".