1240151 has 4 divisors (see below), whose sum is σ = 1352904. Its totient is φ = 1127400.

The previous prime is 1240139. The next prime is 1240153. The reversal of 1240151 is 1510421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1240151 - 2⁶ = 1240087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56360 + ... + 56381.

It is an arithmetic number, because the mean of its divisors is an integer number (338226).

2^1240151 is an apocalyptic number.

1240151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1240151 is a deficient number, since it is larger than the sum of its proper divisors (112753).

1240151 is a wasteful number, since it uses less digits than its factorization.

1240151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112752.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1240151 is about 1113.6206715035. The cubic root of 1240151 is about 107.4380678062.

Adding to 1240151 its reverse (1510421), we get a palindrome (2750572).

The spelling of 1240151 in words is "one million, two hundred forty thousand, one hundred fifty-one".