102420079 has 8 divisors (see below), whose sum is σ = 103593168. Its totient is φ = 101251200.

The previous prime is 102420077. The next prime is 102420119. The reversal of 102420079 is 970024201.

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 102420079 - 2¹ = 102420077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102420077) 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, 84679 + ... + 85879.

It is an arithmetic number, because the mean of its divisors is an integer number (12949146).

Almost surely, 2^102420079 is an apocalyptic number.

102420079 is a deficient number, since it is larger than the sum of its proper divisors (1173089).

102420079 is a wasteful number, since it uses less digits than its factorization.

102420079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 102420079 is about 10120.2805791144. The cubic root of 102420079 is about 467.8734149449.

The spelling of 102420079 in words is "one hundred two million, four hundred twenty thousand, seventy-nine".