40123149 has 8 divisors (see below), whose sum is σ = 58360992. Its totient is φ = 24317040.

The previous prime is 40123141. The next prime is 40123169. The reversal of 40123149 is 94132104.

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

It is not a de Polignac number, because 40123149 - 2³ = 40123141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123141) 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, 607894 + ... + 607959.

It is an arithmetic number, because the mean of its divisors is an integer number (7295124).

Almost surely, 2^40123149 is an apocalyptic number.

It is an amenable number.

40123149 is a deficient number, since it is larger than the sum of its proper divisors (18237843).

40123149 is a wasteful number, since it uses less digits than its factorization.

40123149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215867.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 40123149 is about 6334.2836216892. The cubic root of 40123149 is about 342.3457994835.

The spelling of 40123149 in words is "forty million, one hundred twenty-three thousand, one hundred forty-nine".