1442731 has 2 divisors, whose sum is σ = 1442732. Its totient is φ = 1442730.

The previous prime is 1442723. The next prime is 1442743. The reversal of 1442731 is 1372441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1442731 - 2³ = 1442723 is a prime.

It is a super-2 number, since 2×1442731² = 4162945476722, which contains 22 as substring.

It is a Chen prime.

1442731 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1442531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721365 + 721366.

It is an arithmetic number, because the mean of its divisors is an integer number (721366).

2^1442731 is an apocalyptic number.

1442731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442731 is an equidigital number, since it uses as much as digits as its factorization.

1442731 is an evil number, because the sum of its binary digits is even.

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

The square root of 1442731 is about 1201.1373776550. The cubic root of 1442731 is about 112.9956664222.

The spelling of 1442731 in words is "one million, four hundred forty-two thousand, seven hundred thirty-one".