42237901 has 4 divisors (see below), whose sum is σ = 42413404. Its totient is φ = 42062400.

The previous prime is 42237869. The next prime is 42237907. The reversal of 42237901 is 10973224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31933801 + 10304100 = 5651^2 + 3210^2 .

It is a cyclic number.

It is not a de Polignac number, because 42237901 - 2⁵ = 42237869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42237901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42237907) 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, 87390 + ... + 87871.

It is an arithmetic number, because the mean of its divisors is an integer number (10603351).

Almost surely, 2^42237901 is an apocalyptic number.

It is an amenable number.

42237901 is a deficient number, since it is larger than the sum of its proper divisors (175503).

42237901 is a wasteful number, since it uses less digits than its factorization.

42237901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175502.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 42237901 is about 6499.0692410529. The cubic root of 42237901 is about 348.2577388874.

The spelling of 42237901 in words is "forty-two million, two hundred thirty-seven thousand, nine hundred one".