421214051 has 2 divisors, whose sum is σ = 421214052. Its totient is φ = 421214050.

The previous prime is 421214023. The next prime is 421214069. The reversal of 421214051 is 150412124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421214051 - 2⁶ = 421213987 is a prime.

It is not a weakly prime, because it can be changed into another prime (421214011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210607025 + 210607026.

It is an arithmetic number, because the mean of its divisors is an integer number (210607026).

Almost surely, 2^421214051 is an apocalyptic number.

421214051 is a deficient number, since it is larger than the sum of its proper divisors (1).

421214051 is an equidigital number, since it uses as much as digits as its factorization.

421214051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 421214051 is about 20523.4999695471. The cubic root of 421214051 is about 749.6081217961.

Adding to 421214051 its reverse (150412124), we get a palindrome (571626175).

The spelling of 421214051 in words is "four hundred twenty-one million, two hundred fourteen thousand, fifty-one".