420274207505 has 16 divisors (see below), whose sum is σ = 528979991040. Its totient is φ = 320172086592.

The previous prime is 420274207453. The next prime is 420274207517. The reversal of 420274207505 is 505702472024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 420274207505 - 2¹² = 420274203409 is a prime.

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, 24158885 + ... + 24176274.

It is an arithmetic number, because the mean of its divisors is an integer number (33061249440).

Almost surely, 2^420274207505 is an apocalyptic number.

It is an amenable number.

420274207505 is a deficient number, since it is larger than the sum of its proper divisors (108705783535).

420274207505 is a wasteful number, since it uses less digits than its factorization.

420274207505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48335248.

The product of its (nonzero) digits is 156800, while the sum is 38.

Adding to 420274207505 its reverse (505702472024), we get a palindrome (925976679529).

The spelling of 420274207505 in words is "four hundred twenty billion, two hundred seventy-four million, two hundred seven thousand, five hundred five".