42706918 has 4 divisors (see below), whose sum is σ = 64060380. Its totient is φ = 21353458.

The previous prime is 42706913. The next prime is 42706919. The reversal of 42706918 is 81960724.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42706913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676728 + ... + 10676731.

It is an arithmetic number, because the mean of its divisors is an integer number (16015095).

Almost surely, 2^42706918 is an apocalyptic number.

42706918 is a deficient number, since it is larger than the sum of its proper divisors (21353462).

42706918 is a wasteful number, since it uses less digits than its factorization.

42706918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21353461.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 42706918 is about 6535.0530219731. The cubic root of 42706918 is about 349.5420350410.

The spelling of 42706918 in words is "forty-two million, seven hundred six thousand, nine hundred eighteen".