1242681 has 8 divisors (see below), whose sum is σ = 1807584. Its totient is φ = 753120.

The previous prime is 1242643. The next prime is 1242739. The reversal of 1242681 is 1862421.

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

It is not a de Polignac number, because 1242681 - 2⁶ = 1242617 is a prime.

It is a super-2 number, since 2×1242681² = 3088512135522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18796 + ... + 18861.

It is an arithmetic number, because the mean of its divisors is an integer number (225948).

2^1242681 is an apocalyptic number.

1242681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1242681 is a deficient number, since it is larger than the sum of its proper divisors (564903).

1242681 is a wasteful number, since it uses less digits than its factorization.

1242681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37671.

The product of its digits is 768, while the sum is 24.

The square root of 1242681 is about 1114.7560271198. The cubic root of 1242681 is about 107.5110787212.

The spelling of 1242681 in words is "one million, two hundred forty-two thousand, six hundred eighty-one".