52072942 has 4 divisors (see below), whose sum is σ = 78109416. Its totient is φ = 26036470.

The previous prime is 52072931. The next prime is 52072961. The reversal of 52072942 is 24927025.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13018234 + ... + 13018237.

It is an arithmetic number, because the mean of its divisors is an integer number (19527354).

Almost surely, 2^52072942 is an apocalyptic number.

52072942 is a deficient number, since it is larger than the sum of its proper divisors (26036474).

52072942 is a wasteful number, since it uses less digits than its factorization.

52072942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26036473.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 52072942 is about 7216.1583962660. The cubic root of 52072942 is about 373.4255577503.

Adding to 52072942 its reverse (24927025), we get a palindrome (76999967).

The spelling of 52072942 in words is "fifty-two million, seventy-two thousand, nine hundred forty-two".