421467427 has 2 divisors, whose sum is σ = 421467428. Its totient is φ = 421467426.

The previous prime is 421467373. The next prime is 421467437. The reversal of 421467427 is 724764124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421467427 - 2¹⁵ = 421434659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421467437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210733713 + 210733714.

It is an arithmetic number, because the mean of its divisors is an integer number (210733714).

Almost surely, 2^421467427 is an apocalyptic number.

421467427 is a deficient number, since it is larger than the sum of its proper divisors (1).

421467427 is an equidigital number, since it uses as much as digits as its factorization.

421467427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 37.

The square root of 421467427 is about 20529.6718678112. The cubic root of 421467427 is about 749.7583974386.

The spelling of 421467427 in words is "four hundred twenty-one million, four hundred sixty-seven thousand, four hundred twenty-seven".