402101420 has 24 divisors (see below), whose sum is σ = 965043744. Its totient is φ = 137863296.

The previous prime is 402101419. The next prime is 402101449. The reversal of 402101420 is 24101204.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 402101395 and 402101404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435937 + ... + 1436216.

It is an arithmetic number, because the mean of its divisors is an integer number (40210156).

Almost surely, 2^402101420 is an apocalyptic number.

It is an amenable number.

402101420 is an abundant number, since it is smaller than the sum of its proper divisors (562942324).

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

402101420 is a wasteful number, since it uses less digits than its factorization.

402101420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872169 (or 2872167 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 402101420 is about 20052.4666811841. The cubic root of 402101420 is about 738.0943296898.

Adding to 402101420 its reverse (24101204), we get a palindrome (426202624).

The spelling of 402101420 in words is "four hundred two million, one hundred one thousand, four hundred twenty".