402101197 has 2 divisors, whose sum is σ = 402101198. Its totient is φ = 402101196.

The previous prime is 402101179. The next prime is 402101239. The reversal of 402101197 is 791101204.

Together with previous prime (402101179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 401842116 + 259081 = 20046^2 + 509^2 .

It is a cyclic number.

It is not a de Polignac number, because 402101197 - 2⁷ = 402101069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402101137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201050598 + 201050599.

It is an arithmetic number, because the mean of its divisors is an integer number (201050599).

Almost surely, 2^402101197 is an apocalyptic number.

It is an amenable number.

402101197 is a deficient number, since it is larger than the sum of its proper divisors (1).

402101197 is an equidigital number, since it uses as much as digits as its factorization.

402101197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 402101197 is about 20052.4611207702. The cubic root of 402101197 is about 738.0941932441.

The spelling of 402101197 in words is "four hundred two million, one hundred one thousand, one hundred ninety-seven".