52121442 has 16 divisors (see below), whose sum is σ = 104440032. Its totient is φ = 17340960.

The previous prime is 52121441. The next prime is 52121467. The reversal of 52121442 is 24412125.

It is not an unprimeable number, because it can be changed into a prime (52121441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4659 + ... + 11222.

It is an arithmetic number, because the mean of its divisors is an integer number (6527502).

Almost surely, 2^52121442 is an apocalyptic number.

52121442 is an abundant number, since it is smaller than the sum of its proper divisors (52318590).

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

52121442 is a wasteful number, since it uses less digits than its factorization.

52121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16433.

The product of its digits is 640, while the sum is 21.

The square root of 52121442 is about 7219.5181279639. The cubic root of 52121442 is about 373.5414561993.

Adding to 52121442 its reverse (24412125), we get a palindrome (76533567).

The spelling of 52121442 in words is "fifty-two million, one hundred twenty-one thousand, four hundred forty-two".