42446740 has 36 divisors (see below), whose sum is σ = 103693716. Its totient is φ = 14552832.

The previous prime is 42446731. The next prime is 42446743. The reversal of 42446740 is 4764424.

It can be written as a sum of positive squares in 2 ways, for example, as 32787076 + 9659664 = 5726^2 + 3108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42446743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20677 + ... + 22636.

It is an arithmetic number, because the mean of its divisors is an integer number (2880381).

Almost surely, 2^42446740 is an apocalyptic number.

It is an amenable number.

42446740 is an abundant number, since it is smaller than the sum of its proper divisors (61246976).

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

42446740 is a wasteful number, since it uses less digits than its factorization.

42446740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43336 (or 43327 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 42446740 is about 6515.1162691083. The cubic root of 42446740 is about 348.8307649862.

The spelling of 42446740 in words is "forty-two million, four hundred forty-six thousand, seven hundred forty".