42989974 has 8 divisors (see below), whose sum is σ = 68278248. Its totient is φ = 20230560.

The previous prime is 42989971. The next prime is 42989987. The reversal of 42989974 is 47998924.

42989974 = 893² + 894² + ... + 943².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42989971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632172 + ... + 632239.

It is an arithmetic number, because the mean of its divisors is an integer number (8534781).

Almost surely, 2^42989974 is an apocalyptic number.

42989974 is a deficient number, since it is larger than the sum of its proper divisors (25288274).

42989974 is a wasteful number, since it uses less digits than its factorization.

42989974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264430.

The product of its digits is 1306368, while the sum is 52.

The square root of 42989974 is about 6556.6740044019. The cubic root of 42989974 is about 350.3125751865.

The spelling of 42989974 in words is "forty-two million, nine hundred eighty-nine thousand, nine hundred seventy-four".