420432102 has 24 divisors (see below), whose sum is σ = 924534936. Its totient is φ = 138051936.

The previous prime is 420432079. The next prime is 420432107. The reversal of 420432102 is 201234024.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420432107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173103 + ... + 175514.

It is an arithmetic number, because the mean of its divisors is an integer number (38522289).

Almost surely, 2^420432102 is an apocalyptic number.

420432102 is an abundant number, since it is smaller than the sum of its proper divisors (504102834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420432102 is a wasteful number, since it uses less digits than its factorization.

420432102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348692 (or 348689 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 420432102 is about 20504.4410311523. The cubic root of 420432102 is about 749.1439726613.

Adding to 420432102 its reverse (201234024), we get a palindrome (621666126).

The spelling of 420432102 in words is "four hundred twenty million, four hundred thirty-two thousand, one hundred two".