420254402502 has 64 divisors (see below), whose sum is σ = 970985449728. Its totient is φ = 119842560000.

The previous prime is 420254402473. The next prime is 420254402507. The reversal of 420254402502 is 205204452024.

It is a super-2 number, since 2×420254402502² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420254402502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420254402507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10179502 + ... + 10220702.

It is an arithmetic number, because the mean of its divisors is an integer number (15171647652).

Almost surely, 2^420254402502 is an apocalyptic number.

420254402502 is an abundant number, since it is smaller than the sum of its proper divisors (550731047226).

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

420254402502 is a wasteful number, since it uses less digits than its factorization.

420254402502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50325.

The product of its (nonzero) digits is 25600, while the sum is 30.

Adding to 420254402502 its reverse (205204452024), we get a palindrome (625458854526).

The spelling of 420254402502 in words is "four hundred twenty billion, two hundred fifty-four million, four hundred two thousand, five hundred two".