55406142 has 36 divisors (see below), whose sum is σ = 131957280. Its totient is φ = 16789080.

The previous prime is 55406137. The next prime is 55406159. The reversal of 55406142 is 24160455.

55406142 is a `hidden beast` number, since 5 + 5 + 40 + 614 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10542 + ... + 14897.

It is an arithmetic number, because the mean of its divisors is an integer number (3665480).

Almost surely, 2^55406142 is an apocalyptic number.

55406142 is an abundant number, since it is smaller than the sum of its proper divisors (76551138).

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

55406142 is a wasteful number, since it uses less digits than its factorization.

55406142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25469 (or 25455 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 55406142 is about 7443.5302108610. The cubic root of 55406142 is about 381.2290354144.

Adding to 55406142 its reverse (24160455), we get a palindrome (79566597).

The spelling of 55406142 in words is "fifty-five million, four hundred six thousand, one hundred forty-two".