1270642 has 8 divisors (see below), whose sum is σ = 1915632. Its totient is φ = 632100.

The previous prime is 1270639. The next prime is 1270649. The reversal of 1270642 is 2460721.

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

It is a super-2 number, since 2×1270642² = 3229062184328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1270649) 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 3 ways as a sum of consecutive naturals, for example, 1084 + ... + 1927.

It is an arithmetic number, because the mean of its divisors is an integer number (239454).

2^1270642 is an apocalyptic number.

1270642 is a deficient number, since it is larger than the sum of its proper divisors (644990).

1270642 is a wasteful number, since it uses less digits than its factorization.

1270642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1270642 is about 1127.2275724094. The cubic root of 1270642 is about 108.3114580420.

The spelling of 1270642 in words is "one million, two hundred seventy thousand, six hundred forty-two".