55402142 has 8 divisors (see below), whose sum is σ = 83138832. Its totient is φ = 27689200.

The previous prime is 55402129. The next prime is 55402153. The reversal of 55402142 is 24120455.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2042 + ... + 10722.

It is an arithmetic number, because the mean of its divisors is an integer number (10392354).

Almost surely, 2^55402142 is an apocalyptic number.

55402142 is a deficient number, since it is larger than the sum of its proper divisors (27736690).

55402142 is a wasteful number, since it uses less digits than its factorization.

55402142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11874.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 55402142 is about 7443.2615162978. The cubic root of 55402142 is about 381.2198610234.

Adding to 55402142 its reverse (24120455), we get a palindrome (79522597).

The spelling of 55402142 in words is "fifty-five million, four hundred two thousand, one hundred forty-two".