420002537 has 2 divisors, whose sum is σ = 420002538. Its totient is φ = 420002536.

The previous prime is 420002501. The next prime is 420002549. The reversal of 420002537 is 735200024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411116176 + 8886361 = 20276^2 + 2981^2 .

It is a cyclic number.

It is not a de Polignac number, because 420002537 - 2¹⁴ = 419986153 is a prime.

It is not a weakly prime, because it can be changed into another prime (420007537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210001268 + 210001269.

It is an arithmetic number, because the mean of its divisors is an integer number (210001269).

Almost surely, 2^420002537 is an apocalyptic number.

It is an amenable number.

420002537 is a deficient number, since it is larger than the sum of its proper divisors (1).

420002537 is an equidigital number, since it uses as much as digits as its factorization.

420002537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 420002537 is about 20493.9634282879. The cubic root of 420002537 is about 748.8887465973. Note that the first 3 decimals are identical.

The spelling of 420002537 in words is "four hundred twenty million, two thousand, five hundred thirty-seven".