104737021 has 2 divisors, whose sum is σ = 104737022. Its totient is φ = 104737020.

The previous prime is 104736997. The next prime is 104737037. The reversal of 104737021 is 120737401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102212100 + 2524921 = 10110^2 + 1589^2 .

It is a cyclic number.

It is not a de Polignac number, because 104737021 - 2¹⁹ = 104212733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104737081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52368510 + 52368511.

It is an arithmetic number, because the mean of its divisors is an integer number (52368511).

Almost surely, 2^104737021 is an apocalyptic number.

It is an amenable number.

104737021 is a deficient number, since it is larger than the sum of its proper divisors (1).

104737021 is an equidigital number, since it uses as much as digits as its factorization.

104737021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 104737021 is about 10234.1106599450. The cubic root of 104737021 is about 471.3752102049.

The spelling of 104737021 in words is "one hundred four million, seven hundred thirty-seven thousand, twenty-one".