42042452 has 12 divisors (see below), whose sum is σ = 74582676. Its totient is φ = 20733120.

The previous prime is 42042439. The next prime is 42042491. The reversal of 42042452 is 25424024.

It can be written as a sum of positive squares in 2 ways, for example, as 23775376 + 18267076 = 4876^2 + 4274^2 .

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, 71699 + ... + 72282.

It is an arithmetic number, because the mean of its divisors is an integer number (6215223).

Almost surely, 2^42042452 is an apocalyptic number.

It is an amenable number.

42042452 is a deficient number, since it is larger than the sum of its proper divisors (32540224).

42042452 is a wasteful number, since it uses less digits than its factorization.

42042452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144058 (or 144056 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 42042452 is about 6484.0151141095. The cubic root of 42042452 is about 347.7197395629.

Adding to 42042452 its reverse (25424024), we get a palindrome (67466476).

The spelling of 42042452 in words is "forty-two million, forty-two thousand, four hundred fifty-two".