1426981 has 2 divisors, whose sum is σ = 1426982. Its totient is φ = 1426980.

The previous prime is 1426969. The next prime is 1426987. The reversal of 1426981 is 1896241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 58081 = 1170^2 + 241^2 .

It is an emirp because it is prime and its reverse (1896241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1426981 - 2⁵ = 1426949 is a prime.

It is a super-2 number, since 2×1426981² = 4072549548722, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1426987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713490 + 713491.

It is an arithmetic number, because the mean of its divisors is an integer number (713491).

2^1426981 is an apocalyptic number.

It is an amenable number.

1426981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1426981 is an equidigital number, since it uses as much as digits as its factorization.

1426981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 1426981 is about 1194.5631000496. The cubic root of 1426981 is about 112.5829774658.

The spelling of 1426981 in words is "one million, four hundred twenty-six thousand, nine hundred eighty-one".