1240897 has 8 divisors (see below), whose sum is σ = 1425600. Its totient is φ = 1058064.

The previous prime is 1240861. The next prime is 1240931. The reversal of 1240897 is 7980421.

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

It is not a de Polignac number, because 1240897 - 2⁷ = 1240769 is a prime.

It is a Duffinian number.

1240897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1240807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554 + ... + 2212.

It is an arithmetic number, because the mean of its divisors is an integer number (178200).

2^1240897 is an apocalyptic number.

It is an amenable number.

1240897 is a deficient number, since it is larger than the sum of its proper divisors (184703).

1240897 is an equidigital number, since it uses as much as digits as its factorization.

1240897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1240897 is about 1113.9555646434. The cubic root of 1240897 is about 107.4596062407.

It can be divided in two parts, 12408 and 97, that multiplied together give a triangular number (1203576 = T₁₅₅₁).

The spelling of 1240897 in words is "one million, two hundred forty thousand, eight hundred ninety-seven".