420492101 has 2 divisors, whose sum is σ = 420492102. Its totient is φ = 420492100.

The previous prime is 420492073. The next prime is 420492109. The reversal of 420492101 is 101294024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391050625 + 29441476 = 19775^2 + 5426^2 .

It is a cyclic number.

It is not a de Polignac number, because 420492101 - 2¹⁰ = 420491077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420492109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210246050 + 210246051.

It is an arithmetic number, because the mean of its divisors is an integer number (210246051).

Almost surely, 2^420492101 is an apocalyptic number.

It is an amenable number.

420492101 is a deficient number, since it is larger than the sum of its proper divisors (1).

420492101 is an equidigital number, since it uses as much as digits as its factorization.

420492101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 420492101 is about 20505.9040522480. The cubic root of 420492101 is about 749.1796072311.

The spelling of 420492101 in words is "four hundred twenty million, four hundred ninety-two thousand, one hundred one".