42072975 has 36 divisors (see below), whose sum is σ = 86125936. Its totient is φ = 19232640.

The previous prime is 42072931. The next prime is 42073027. The reversal of 42072975 is 57927024.

It is not a de Polignac number, because 42072975 - 2⁹ = 42072463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11782 + ... + 14931.

Almost surely, 2^42072975 is an apocalyptic number.

42072975 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42072975 is an abundant number, since it is smaller than the sum of its proper divisors (44052961).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42072975 is a wasteful number, since it uses less digits than its factorization.

42072975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26736 (or 26728 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 42072975 is about 6486.3683984183. The cubic root of 42072975 is about 347.8038678798.

Adding to 42072975 its reverse (57927024), we get a palindrome (99999999).

The spelling of 42072975 in words is "forty-two million, seventy-two thousand, nine hundred seventy-five".