42989707 has 4 divisors (see below), whose sum is σ = 43214976. Its totient is φ = 42764440.

The previous prime is 42989699. The next prime is 42989743. The reversal of 42989707 is 70798924.

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

It is a cyclic number.

It is not a de Polignac number, because 42989707 - 2³ = 42989699 is a prime.

It is a super-2 number, since 2×42989707² = 3696229815891698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42989747) 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, 112348 + ... + 112729.

It is an arithmetic number, because the mean of its divisors is an integer number (10803744).

Almost surely, 2^42989707 is an apocalyptic number.

42989707 is a deficient number, since it is larger than the sum of its proper divisors (225269).

42989707 is a wasteful number, since it uses less digits than its factorization.

42989707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225268.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 42989707 is about 6556.6536434373. The cubic root of 42989707 is about 350.3118499504.

The spelling of 42989707 in words is "forty-two million, nine hundred eighty-nine thousand, seven hundred seven".