1540156 has 6 divisors (see below), whose sum is σ = 2695280. Its totient is φ = 770076.

The previous prime is 1540153. The next prime is 1540157. The reversal of 1540156 is 6510451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192516 + ... + 192523.

2^1540156 is an apocalyptic number.

It is an amenable number.

1540156 is a deficient number, since it is larger than the sum of its proper divisors (1155124).

1540156 is a wasteful number, since it uses less digits than its factorization.

1540156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385043 (or 385041 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1540156 is about 1241.0302171986. The cubic root of 1540156 is about 115.4839342234.

The spelling of 1540156 in words is "one million, five hundred forty thousand, one hundred fifty-six".