428137 has 2 divisors, whose sum is σ = 428138. Its totient is φ = 428136.

The previous prime is 428093. The next prime is 428143. The reversal of 428137 is 731824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301401 + 126736 = 549^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 428137 - 2¹¹ = 426089 is a prime.

It is not a weakly prime, because it can be changed into another prime (428147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214068 + 214069.

It is an arithmetic number, because the mean of its divisors is an integer number (214069).

2⁴²⁸¹³⁷ is an apocalyptic number.

It is an amenable number.

428137 is a deficient number, since it is larger than the sum of its proper divisors (1).

428137 is an equidigital number, since it uses as much as digits as its factorization.

428137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 25.

The square root of 428137 is about 654.3217862795. The cubic root of 428137 is about 75.3692604540.

It can be divided in two parts, 428 and 137, that added together give a palindrome (565).

The spelling of 428137 in words is "four hundred twenty-eight thousand, one hundred thirty-seven".