420137234730 has 24 divisors (see below), whose sum is σ = 1092356810532. Its totient is φ = 112036595904.

The previous prime is 420137234729. The next prime is 420137234731. The reversal of 420137234730 is 37432731024.

420137234730 is a `hidden beast` number, since 420 + 137 + 2 + 34 + 73 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (420137234729) and next prime (420137234731).

It can be written as a sum of positive squares in 2 ways, for example, as 391734536769 + 28402697961 = 625887^2 + 168531^2 .

It is a super-2 number, since 2×420137234730² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420137234731) 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, 2334095659 + ... + 2334095838.

Almost surely, 2^420137234730 is an apocalyptic number.

420137234730 is an abundant number, since it is smaller than the sum of its proper divisors (672219575802).

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

420137234730 is a wasteful number, since it uses less digits than its factorization.

420137234730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668191510 (or 4668191507 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 36.

Adding to 420137234730 its reverse (37432731024), we get a palindrome (457569965754).

The spelling of 420137234730 in words is "four hundred twenty billion, one hundred thirty-seven million, two hundred thirty-four thousand, seven hundred thirty".