42391701 has 16 divisors (see below), whose sum is σ = 68512320. Its totient is φ = 25691760.

The previous prime is 42391673. The next prime is 42391703. The reversal of 42391701 is 10719324.

It is not a de Polignac number, because 42391701 - 2¹⁵ = 42358933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42391703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71070 + ... + 71663.

It is an arithmetic number, because the mean of its divisors is an integer number (4282020).

Almost surely, 2^42391701 is an apocalyptic number.

It is an amenable number.

42391701 is a deficient number, since it is larger than the sum of its proper divisors (26120619).

42391701 is a wasteful number, since it uses less digits than its factorization.

42391701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142753 (or 142747 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 42391701 is about 6510.8909528574. The cubic root of 42391701 is about 348.6799281117.

The spelling of 42391701 in words is "forty-two million, three hundred ninety-one thousand, seven hundred one".