42988749 has 8 divisors (see below), whose sum is σ = 57610080. Its totient is φ = 28513296.

The previous prime is 42988747. The next prime is 42988769. The reversal of 42988749 is 94788924.

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

It is not a de Polignac number, because 42988749 - 2¹ = 42988747 is a prime.

It is a super-3 number, since 3×42988749³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42988747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35779 + ... + 36960.

It is an arithmetic number, because the mean of its divisors is an integer number (7201260).

Almost surely, 2^42988749 is an apocalyptic number.

It is an amenable number.

42988749 is a deficient number, since it is larger than the sum of its proper divisors (14621331).

42988749 is a wasteful number, since it uses less digits than its factorization.

42988749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72939.

The product of its digits is 1161216, while the sum is 51.

The square root of 42988749 is about 6556.5805874709. The cubic root of 42988749 is about 350.3092477674.

The spelling of 42988749 in words is "forty-two million, nine hundred eighty-eight thousand, seven hundred forty-nine".