42400149 has 16 divisors (see below), whose sum is σ = 61793280. Its totient is φ = 25646960.

The previous prime is 42400139. The next prime is 42400177. The reversal of 42400149 is 94100424.

It is a cyclic number.

It is not a de Polignac number, because 42400149 - 2⁸ = 42399893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42400139) 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, 22834 + ... + 24620.

It is an arithmetic number, because the mean of its divisors is an integer number (3862080).

Almost surely, 2^42400149 is an apocalyptic number.

It is an amenable number.

42400149 is a deficient number, since it is larger than the sum of its proper divisors (19393131).

42400149 is a wasteful number, since it uses less digits than its factorization.

42400149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 42400149 is about 6511.5396796764. The cubic root of 42400149 is about 348.7030887172.

The spelling of 42400149 in words is "forty-two million, four hundred thousand, one hundred forty-nine".