12401787 has 8 divisors (see below), whose sum is σ = 16559104. Its totient is φ = 8256168.

The previous prime is 12401743. The next prime is 12401791. The reversal of 12401787 is 78710421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12401787 - 2⁶ = 12401723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12401087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43 + ... + 4980.

It is an arithmetic number, because the mean of its divisors is an integer number (2069888).

Almost surely, 2^12401787 is an apocalyptic number.

12401787 is a deficient number, since it is larger than the sum of its proper divisors (4157317).

12401787 is an equidigital number, since it uses as much as digits as its factorization.

12401787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5849.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 12401787 is about 3521.6171001402. The cubic root of 12401787 is about 231.4700236568.

The spelling of 12401787 in words is "twelve million, four hundred one thousand, seven hundred eighty-seven".