420137 has 4 divisors (see below), whose sum is σ = 424320. Its totient is φ = 415956.

The previous prime is 420103. The next prime is 420149. The reversal of 420137 is 731024.

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 420137 - 2⁶ = 420073 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420137.

It is not an unprimeable number, because it can be changed into a prime (420037) 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, 1937 + ... + 2142.

It is an arithmetic number, because the mean of its divisors is an integer number (106080).

2⁴²⁰¹³⁷ is an apocalyptic number.

It is an amenable number.

420137 is a deficient number, since it is larger than the sum of its proper divisors (4183).

420137 is a wasteful number, since it uses less digits than its factorization.

420137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 420137 is about 648.1797590175. The cubic root of 420137 is about 74.8968656498.

The spelling of 420137 in words is "four hundred twenty thousand, one hundred thirty-seven".