102401397 has 12 divisors (see below), whose sum is σ = 169043680. Its totient is φ = 58515048.

The previous prime is 102401357. The next prime is 102401399. The reversal of 102401397 is 793104201.

It is not a de Polignac number, because 102401397 - 2⁷ = 102401269 is a prime.

It is a super-2 number, since 2×102401397² = 20972092215103218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102401397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102401399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 812647 + ... + 812772.

Almost surely, 2^102401397 is an apocalyptic number.

It is an amenable number.

102401397 is a deficient number, since it is larger than the sum of its proper divisors (66642283).

102401397 is a wasteful number, since it uses less digits than its factorization.

102401397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625432 (or 1625429 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 102401397 is about 10119.3575388954. The cubic root of 102401397 is about 467.8449656319.

Adding to 102401397 its reverse (793104201), we get a palindrome (895505598).

The spelling of 102401397 in words is "one hundred two million, four hundred one thousand, three hundred ninety-seven".