420262552121 has 4 divisors (see below), whose sum is σ = 424190239632. Its totient is φ = 416334864612.

The previous prime is 420262552103. The next prime is 420262552123. The reversal of 420262552121 is 121255262024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420262552121 - 2⁶ = 420262552057 is a prime.

It is a super-2 number, since 2×420262552121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420262552123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963843595 + ... + 1963843808.

It is an arithmetic number, because the mean of its divisors is an integer number (106047559908).

Almost surely, 2^420262552121 is an apocalyptic number.

It is an amenable number.

420262552121 is a deficient number, since it is larger than the sum of its proper divisors (3927687511).

420262552121 is a wasteful number, since it uses less digits than its factorization.

420262552121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3927687510.

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 420262552121 in words is "four hundred twenty billion, two hundred sixty-two million, five hundred fifty-two thousand, one hundred twenty-one".