42012045 has 12 divisors (see below), whose sum is σ = 72820956. Its totient is φ = 22406400.

The previous prime is 42012017. The next prime is 42012073. The reversal of 42012045 is 54021024.

It is an interprime number because it is at equal distance from previous prime (42012017) and next prime (42012073).

It can be written as a sum of positive squares in 2 ways, for example, as 16670889 + 25341156 = 4083^2 + 5034^2 .

It is not a de Polignac number, because 42012045 - 2¹² = 42007949 is a prime.

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, 466756 + ... + 466845.

It is an arithmetic number, because the mean of its divisors is an integer number (6068413).

Almost surely, 2^42012045 is an apocalyptic number.

42012045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42012045 is a deficient number, since it is larger than the sum of its proper divisors (30808911).

42012045 is a wasteful number, since it uses less digits than its factorization.

42012045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933612 (or 933609 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 42012045 is about 6481.6699237156. The cubic root of 42012045 is about 347.6358904721.

Adding to 42012045 its reverse (54021024), we get a palindrome (96033069).

The spelling of 42012045 in words is "forty-two million, twelve thousand, forty-five".