12401535 has 16 divisors (see below), whose sum is σ = 19925856. Its totient is φ = 6586368.

The previous prime is 12401533. The next prime is 12401537. The reversal of 12401535 is 53510421.

It is an interprime number because it is at equal distance from previous prime (12401533) and next prime (12401537).

It is not a de Polignac number, because 12401535 - 2¹ = 12401533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12401533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2247 + ... + 5463.

It is an arithmetic number, because the mean of its divisors is an integer number (1245366).

Almost surely, 2^12401535 is an apocalyptic number.

12401535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12401535 is a deficient number, since it is larger than the sum of its proper divisors (7524321).

12401535 is a wasteful number, since it uses less digits than its factorization.

12401535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12401535 is about 3521.5813209409. The cubic root of 12401535 is about 231.4684558494.

Adding to 12401535 its reverse (53510421), we get a palindrome (65911956).

It can be divided in two parts, 1240 and 1535, that added together give a triangular number (2775 = T₇₄).

The spelling of 12401535 in words is "twelve million, four hundred one thousand, five hundred thirty-five".