42645124 has 6 divisors (see below), whose sum is σ = 74628974. Its totient is φ = 21322560.

The previous prime is 42645107. The next prime is 42645131. The reversal of 42645124 is 42154624.

It can be written as a sum of positive squares in only one way, i.e., 27899524 + 14745600 = 5282^2 + 3840^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42645092 and 42645101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330637 + ... + 5330644.

Almost surely, 2^42645124 is an apocalyptic number.

It is an amenable number.

42645124 is a deficient number, since it is larger than the sum of its proper divisors (31983850).

42645124 is a wasteful number, since it uses less digits than its factorization.

42645124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661285 (or 10661283 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 42645124 is about 6530.3234223123. The cubic root of 42645124 is about 349.3733658290.

Adding to 42645124 its reverse (42154624), we get a palindrome (84799748).

The spelling of 42645124 in words is "forty-two million, six hundred forty-five thousand, one hundred twenty-four".