102421299 has 16 divisors (see below), whose sum is σ = 137986560. Its totient is φ = 67572960.

The previous prime is 102421283. The next prime is 102421331. The reversal of 102421299 is 992124201.

It is a happy number.

It is not a de Polignac number, because 102421299 - 2⁴ = 102421283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102421199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150949 + ... + 151625.

It is an arithmetic number, because the mean of its divisors is an integer number (8624160).

Almost surely, 2^102421299 is an apocalyptic number.

102421299 is a deficient number, since it is larger than the sum of its proper divisors (35565261).

102421299 is a wasteful number, since it uses less digits than its factorization.

102421299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 102421299 is about 10120.3408539436. The cubic root of 102421299 is about 467.8752726642.

The spelling of 102421299 in words is "one hundred two million, four hundred twenty-one thousand, two hundred ninety-nine".