420102345 has 32 divisors (see below), whose sum is σ = 728364672. Its totient is φ = 205535232.

The previous prime is 420102307. The next prime is 420102377. The reversal of 420102345 is 543201024.

It is not a de Polignac number, because 420102345 - 2⁶ = 420102281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25177 + ... + 38393.

It is an arithmetic number, because the mean of its divisors is an integer number (22761396).

Almost surely, 2^420102345 is an apocalyptic number.

It is an amenable number.

420102345 is a deficient number, since it is larger than the sum of its proper divisors (308262327).

420102345 is a wasteful number, since it uses less digits than its factorization.

420102345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13401.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 420102345 is about 20496.3983421478. The cubic root of 420102345 is about 748.9480630391.

Adding to 420102345 its reverse (543201024), we get a palindrome (963303369).

The spelling of 420102345 in words is "four hundred twenty million, one hundred two thousand, three hundred forty-five".