42739622 has 4 divisors (see below), whose sum is σ = 64109436. Its totient is φ = 21369810.

The previous prime is 42739601. The next prime is 42739633. The reversal of 42739622 is 22693724.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10684904 + ... + 10684907.

It is an arithmetic number, because the mean of its divisors is an integer number (16027359).

Almost surely, 2^42739622 is an apocalyptic number.

42739622 is a deficient number, since it is larger than the sum of its proper divisors (21369814).

42739622 is a wasteful number, since it uses less digits than its factorization.

42739622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21369813.

The product of its digits is 36288, while the sum is 35.

The square root of 42739622 is about 6537.5547416446. The cubic root of 42739622 is about 349.6312360925.

The spelling of 42739622 in words is "forty-two million, seven hundred thirty-nine thousand, six hundred twenty-two".