102726021 has 8 divisors (see below), whose sum is σ = 139289760. Its totient is φ = 67323152.

The previous prime is 102725977. The next prime is 102726049. The reversal of 102726021 is 120627201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102726021 - 2⁶ = 102725957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102726061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290010 + ... + 290363.

It is an arithmetic number, because the mean of its divisors is an integer number (17411220).

Almost surely, 2^102726021 is an apocalyptic number.

It is an amenable number.

102726021 is a deficient number, since it is larger than the sum of its proper divisors (36563739).

102726021 is an equidigital number, since it uses as much as digits as its factorization.

102726021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580435.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 102726021 is about 10135.3846004974. The cubic root of 102726021 is about 468.3388179458.

The spelling of 102726021 in words is "one hundred two million, seven hundred twenty-six thousand, twenty-one".