420145034012540 has 48 divisors (see below), whose sum is σ = 901095218980992. Its totient is φ = 164478987165696.

The previous prime is 420145034012533. The next prime is 420145034012593. The reversal of 420145034012540 is 45210430541024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 420145034012540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42280124 + ... + 51263036.

It is an arithmetic number, because the mean of its divisors is an integer number (18772817062104).

Almost surely, 2^{420145034012540} is an apocalyptic number.

It is an amenable number.

420145034012540 is an abundant number, since it is smaller than the sum of its proper divisors (480950184968452).

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

420145034012540 is a wasteful number, since it uses less digits than its factorization.

420145034012540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9032726 (or 9032724 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 420145034012540 its reverse (45210430541024), we get a palindrome (465355464553564).

The spelling of 420145034012540 in words is "four hundred twenty trillion, one hundred forty-five billion, thirty-four million, twelve thousand, five hundred forty".