42495644 has 6 divisors (see below), whose sum is σ = 74367384. Its totient is φ = 21247820.

The previous prime is 42495641. The next prime is 42495659. The reversal of 42495644 is 44659424.

It is a junction number, because it is equal to n+sod(n) for n = 42495598 and 42495607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42495641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5311952 + ... + 5311959.

It is an arithmetic number, because the mean of its divisors is an integer number (12394564).

Almost surely, 2^42495644 is an apocalyptic number.

It is an amenable number.

42495644 is a deficient number, since it is larger than the sum of its proper divisors (31871740).

42495644 is a wasteful number, since it uses less digits than its factorization.

42495644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10623915 (or 10623913 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 42495644 is about 6518.8683066925. The cubic root of 42495644 is about 348.9646792551.

The spelling of 42495644 in words is "forty-two million, four hundred ninety-five thousand, six hundred forty-four".