1426605021 has 8 divisors (see below), whose sum is σ = 2113488960. Its totient is φ = 951069996.

The previous prime is 1426605017. The next prime is 1426605029. The reversal of 1426605021 is 1205066241.

1426605021 is a `hidden beast` number, since 14 + 26 + 605 + 0 + 21 = 666.

It is not a de Polignac number, because 1426605021 - 2² = 1426605017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 52837223 = 1426605021 / (1 + 4 + 2 + 6 + 6 + 0 + 5 + 0 + 2 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426605029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26418585 + ... + 26418638.

It is an arithmetic number, because the mean of its divisors is an integer number (264186120).

Almost surely, 2^1426605021 is an apocalyptic number.

It is an amenable number.

1426605021 is a deficient number, since it is larger than the sum of its proper divisors (686883939).

1426605021 is an equidigital number, since it uses as much as digits as its factorization.

1426605021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52837232 (or 52837226 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1426605021 is about 37770.4252160338. The cubic root of 1426605021 is about 1125.7308886099.

The spelling of 1426605021 in words is "one billion, four hundred twenty-six million, six hundred five thousand, twenty-one".