102498021 has 8 divisors (see below), whose sum is σ = 151848960. Its totient is φ = 68331996.

The previous prime is 102498013. The next prime is 102498031. The reversal of 102498021 is 120894201.

It is not a de Polignac number, because 102498021 - 2³ = 102498013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3796223 = 102498021 / (1 + 0 + 2 + 4 + 9 + 8 + 0 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102498001) 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, 1898085 + ... + 1898138.

It is an arithmetic number, because the mean of its divisors is an integer number (18981120).

Almost surely, 2^102498021 is an apocalyptic number.

It is an amenable number.

102498021 is a deficient number, since it is larger than the sum of its proper divisors (49350939).

102498021 is an equidigital number, since it uses as much as digits as its factorization.

102498021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796232 (or 3796226 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 102498021 is about 10124.1306293429. The cubic root of 102498021 is about 467.9920692279.

The spelling of 102498021 in words is "one hundred two million, four hundred ninety-eight thousand, twenty-one".