52440142 has 8 divisors (see below), whose sum is σ = 78746976. Its totient is φ = 26191152.

The previous prime is 52440131. The next prime is 52440173. The reversal of 52440142 is 24104425.

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, 12118 + ... + 15865.

It is an arithmetic number, because the mean of its divisors is an integer number (9843372).

Almost surely, 2^52440142 is an apocalyptic number.

52440142 is a deficient number, since it is larger than the sum of its proper divisors (26306834).

52440142 is a wasteful number, since it uses less digits than its factorization.

52440142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28922.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 52440142 is about 7241.5566006212. The cubic root of 52440142 is about 374.3012576478.

Adding to 52440142 its reverse (24104425), we get a palindrome (76544567).

The spelling of 52440142 in words is "fifty-two million, four hundred forty thousand, one hundred forty-two".