42105652 has 12 divisors (see below), whose sum is σ = 74068036. Its totient is φ = 20943360.

The previous prime is 42105649. The next prime is 42105689. The reversal of 42105652 is 25650124.

It can be written as a sum of positive squares in 2 ways, for example, as 4822416 + 37283236 = 2196^2 + 6106^2 .

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, 26499 + ... + 28042.

Almost surely, 2^42105652 is an apocalyptic number.

It is an amenable number.

42105652 is a deficient number, since it is larger than the sum of its proper divisors (31962384).

42105652 is a wasteful number, since it uses less digits than its factorization.

42105652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54738 (or 54736 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 42105652 is about 6488.8868074578. The cubic root of 42105652 is about 347.8938880247.

Adding to 42105652 its reverse (25650124), we get a palindrome (67755776).

The spelling of 42105652 in words is "forty-two million, one hundred five thousand, six hundred fifty-two".