1421009131 has 2 divisors, whose sum is σ = 1421009132. Its totient is φ = 1421009130.

The previous prime is 1421009101. The next prime is 1421009147. The reversal of 1421009131 is 1319001241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421009131 - 2¹³ = 1421000939 is a prime.

It is a super-2 number, since 2×1421009131² = 4038533900770750322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421009101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710504565 + 710504566.

It is an arithmetic number, because the mean of its divisors is an integer number (710504566).

Almost surely, 2^1421009131 is an apocalyptic number.

1421009131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421009131 is an equidigital number, since it uses as much as digits as its factorization.

1421009131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1421009131 is about 37696.2747628993. The cubic root of 1421009131 is about 1124.2570583802.

The spelling of 1421009131 in words is "one billion, four hundred twenty-one million, nine thousand, one hundred thirty-one".