420875837 has 4 divisors (see below), whose sum is σ = 421102656. Its totient is φ = 420649020.

The previous prime is 420875831. The next prime is 420875849. The reversal of 420875837 is 738578024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420875837 - 2⁶ = 420875773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420875831) 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, 110603 + ... + 114344.

It is an arithmetic number, because the mean of its divisors is an integer number (105275664).

Almost surely, 2^420875837 is an apocalyptic number.

It is an amenable number.

420875837 is a deficient number, since it is larger than the sum of its proper divisors (226819).

420875837 is a wasteful number, since it uses less digits than its factorization.

420875837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226818.

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 420875837 is about 20515.2586383891. The cubic root of 420875837 is about 749.4074353536.

The spelling of 420875837 in words is "four hundred twenty million, eight hundred seventy-five thousand, eight hundred thirty-seven".