1426121989 has 8 divisors (see below), whose sum is σ = 1460922368. Its totient is φ = 1391690160.

The previous prime is 1426121909. The next prime is 1426122013. The reversal of 1426121989 is 9891216241.

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

It is a cyclic number.

It is not a de Polignac number, because 1426121989 - 2¹¹ = 1426119941 is a prime.

It is a super-2 number, since 2×1426121989² = 4067647855018632242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426121909) 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, 84297 + ... + 99790.

It is an arithmetic number, because the mean of its divisors is an integer number (182615296).

Almost surely, 2^1426121989 is an apocalyptic number.

It is an amenable number.

1426121989 is a deficient number, since it is larger than the sum of its proper divisors (34800379).

1426121989 is a wasteful number, since it uses less digits than its factorization.

1426121989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184275.

The product of its digits is 62208, while the sum is 43.

The square root of 1426121989 is about 37764.0303595895. The cubic root of 1426121989 is about 1125.6038211042.

The spelling of 1426121989 in words is "one billion, four hundred twenty-six million, one hundred twenty-one thousand, nine hundred eighty-nine".