421374101 has 2 divisors, whose sum is σ = 421374102. Its totient is φ = 421374100.

The previous prime is 421374067. The next prime is 421374113. The reversal of 421374101 is 101473124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251983876 + 169390225 = 15874^2 + 13015^2 .

It is a cyclic number.

It is not a de Polignac number, because 421374101 - 2²⁶ = 354265237 is a prime.

It is a super-2 number, since 2×421374101² = 355112265987116402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421374181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210687050 + 210687051.

It is an arithmetic number, because the mean of its divisors is an integer number (210687051).

Almost surely, 2^421374101 is an apocalyptic number.

It is an amenable number.

421374101 is a deficient number, since it is larger than the sum of its proper divisors (1).

421374101 is an equidigital number, since it uses as much as digits as its factorization.

421374101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 421374101 is about 20527.3987879614. The cubic root of 421374101 is about 749.7030534088.

The spelling of 421374101 in words is "four hundred twenty-one million, three hundred seventy-four thousand, one hundred one".