42746638 has 24 divisors (see below), whose sum is σ = 72921240. Its totient is φ = 18757200.

The previous prime is 42746623. The next prime is 42746659. The reversal of 42746638 is 83664724.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42746638.

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, 3973 + ... + 10063.

It is an arithmetic number, because the mean of its divisors is an integer number (3038385).

Almost surely, 2^42746638 is an apocalyptic number.

42746638 is a deficient number, since it is larger than the sum of its proper divisors (30174602).

42746638 is a wasteful number, since it uses less digits than its factorization.

42746638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6144 (or 6133 counting only the distinct ones).

The product of its digits is 193536, while the sum is 40.

The square root of 42746638 is about 6538.0913116903. The cubic root of 42746638 is about 349.6503664952.

The spelling of 42746638 in words is "forty-two million, seven hundred forty-six thousand, six hundred thirty-eight".