1540149 has 32 divisors (see below), whose sum is σ = 2467584. Its totient is φ = 844800.

The previous prime is 1540141. The next prime is 1540151. The reversal of 1540149 is 9410451.

It is not a de Polignac number, because 1540149 - 2³ = 1540141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15199 + ... + 15299.

It is an arithmetic number, because the mean of its divisors is an integer number (77112).

2^1540149 is an apocalyptic number.

It is an amenable number.

1540149 is a deficient number, since it is larger than the sum of its proper divisors (927435).

1540149 is a wasteful number, since it uses less digits than its factorization.

1540149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1540149 is about 1241.0273969579. The cubic root of 1540149 is about 115.4837592652.

The spelling of 1540149 in words is "one million, five hundred forty thousand, one hundred forty-nine".