42001550 has 48 divisors (see below), whose sum is σ = 81369792. Its totient is φ = 16118400.

The previous prime is 42001529. The next prime is 42001573. The reversal of 42001550 is 5510024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143204 + ... + 143496.

It is an arithmetic number, because the mean of its divisors is an integer number (1695204).

Almost surely, 2^42001550 is an apocalyptic number.

42001550 is a deficient number, since it is larger than the sum of its proper divisors (39368242).

42001550 is a wasteful number, since it uses less digits than its factorization.

42001550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 42001550 is about 6480.8602824008. The cubic root of 42001550 is about 347.6069405006.

Adding to 42001550 its reverse (5510024), we get a palindrome (47511574).

The spelling of 42001550 in words is "forty-two million, one thousand, five hundred fifty".