12401019 has 14 divisors (see below), whose sum is σ = 18594116. Its totient is φ = 8266860.

The previous prime is 12400987. The next prime is 12401027. The reversal of 12401019 is 91010421.

It is not a de Polignac number, because 12401019 - 2⁵ = 12400987 is a prime.

It is a super-2 number, since 2×12401019² = 307570544476722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12400992 and 12401010.

It is not an unprimeable number, because it can be changed into a prime (12401819) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7777 + ... + 9234.

Almost surely, 2^12401019 is an apocalyptic number.

12401019 is a deficient number, since it is larger than the sum of its proper divisors (6193097).

12401019 is an frugal number, since it uses more digits than its factorization.

12401019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17029 (or 17014 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 12401019 is about 3521.5080576367. The cubic root of 12401019 is about 231.4652455108.

The spelling of 12401019 in words is "twelve million, four hundred one thousand, nineteen".