42012550 has 24 divisors (see below), whose sum is σ = 78316416. Its totient is φ = 16767840.

The previous prime is 42012547. The next prime is 42012563. The reversal of 42012550 is 5521024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38107 + ... + 39193.

It is an arithmetic number, because the mean of its divisors is an integer number (3263184).

Almost surely, 2^42012550 is an apocalyptic number.

42012550 is a deficient number, since it is larger than the sum of its proper divisors (36303866).

42012550 is a wasteful number, since it uses less digits than its factorization.

42012550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872 (or 1867 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 42012550 is about 6481.7088796088. The cubic root of 42012550 is about 347.6372833696.

Adding to 42012550 its reverse (5521024), we get a palindrome (47533574).

The spelling of 42012550 in words is "forty-two million, twelve thousand, five hundred fifty".