42921774 has 24 divisors (see below), whose sum is σ = 106282800. Its totient is φ = 12263328.

The previous prime is 42921743. The next prime is 42921799. The reversal of 42921774 is 47712924.

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, 170199 + ... + 170450.

It is an arithmetic number, because the mean of its divisors is an integer number (4428450).

Almost surely, 2^42921774 is an apocalyptic number.

42921774 is an abundant number, since it is smaller than the sum of its proper divisors (63361026).

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

42921774 is a wasteful number, since it uses less digits than its factorization.

42921774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340664 (or 340661 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 42921774 is about 6551.4711325015. The cubic root of 42921774 is about 350.1272299350.

The spelling of 42921774 in words is "forty-two million, nine hundred twenty-one thousand, seven hundred seventy-four".