42149973 has 16 divisors (see below), whose sum is σ = 57435840. Its totient is φ = 27489024.

The previous prime is 42149959. The next prime is 42149977. The reversal of 42149973 is 37994124.

It is not a de Polignac number, because 42149973 - 2⁵ = 42149941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42149977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26365 + ... + 27917.

It is an arithmetic number, because the mean of its divisors is an integer number (3589740).

Almost surely, 2^42149973 is an apocalyptic number.

It is an amenable number.

42149973 is a deficient number, since it is larger than the sum of its proper divisors (15285867).

42149973 is a wasteful number, since it uses less digits than its factorization.

42149973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748.

The product of its digits is 54432, while the sum is 39.

The square root of 42149973 is about 6492.3010558661. The cubic root of 42149973 is about 348.0159112160.

The spelling of 42149973 in words is "forty-two million, one hundred forty-nine thousand, nine hundred seventy-three".