102420001 has 4 divisors (see below), whose sum is σ = 105723904. Its totient is φ = 99116100.

The previous prime is 102419987. The next prime is 102420061. The reversal of 102420001 is 100024201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102420001 - 2⁵ = 102419969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102420001.

It is not an unprimeable number, because it can be changed into a prime (102420061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1651905 + ... + 1651966.

It is an arithmetic number, because the mean of its divisors is an integer number (26430976).

Almost surely, 2^102420001 is an apocalyptic number.

It is an amenable number.

102420001 is a deficient number, since it is larger than the sum of its proper divisors (3303903).

102420001 is an equidigital number, since it uses as much as digits as its factorization.

102420001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303902.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 102420001 is about 10120.2767254656. The cubic root of 102420001 is about 467.8732961721.

Adding to 102420001 its reverse (100024201), we get a palindrome (202444202).

It can be divided in two parts, 1024 and 20001, that added together give a square (21025 = 145²).

The spelling of 102420001 in words is "one hundred two million, four hundred twenty thousand, one".