1426370521 has 4 divisors (see below), whose sum is σ = 1443555792. Its totient is φ = 1409185252.

The previous prime is 1426370479. The next prime is 1426370531. The reversal of 1426370521 is 1250736241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1250736241 = 53 ⋅23598797.

It is a cyclic number.

It is not a de Polignac number, because 1426370521 - 2¹⁷ = 1426239449 is a prime.

It is a super-2 number, since 2×1426370521² = 4069065726355622882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1426370531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8592511 + ... + 8592676.

It is an arithmetic number, because the mean of its divisors is an integer number (360888948).

Almost surely, 2^1426370521 is an apocalyptic number.

It is an amenable number.

1426370521 is a deficient number, since it is larger than the sum of its proper divisors (17185271).

1426370521 is an equidigital number, since it uses as much as digits as its factorization.

1426370521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17185270.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1426370521 is about 37767.3208078095. The cubic root of 1426370521 is about 1125.6692040850.

The spelling of 1426370521 in words is "one billion, four hundred twenty-six million, three hundred seventy thousand, five hundred twenty-one".