1421551426 has 8 divisors (see below), whose sum is σ = 2184335244. Its totient is φ = 693439680.

The previous prime is 1421551423. The next prime is 1421551429. The reversal of 1421551426 is 6241551241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1421551423) and next prime (1421551429).

It can be written as a sum of positive squares in 2 ways, for example, as 1420913025 + 638401 = 37695^2 + 799^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1421551423) 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, 8667915 + ... + 8668078.

Almost surely, 2^1421551426 is an apocalyptic number.

1421551426 is a deficient number, since it is larger than the sum of its proper divisors (762783818).

1421551426 is a wasteful number, since it uses less digits than its factorization.

1421551426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17336036.

The product of its digits is 9600, while the sum is 31.

The square root of 1421551426 is about 37703.4670289086. The cubic root of 1421551426 is about 1124.4000556883.

The spelling of 1421551426 in words is "one billion, four hundred twenty-one million, five hundred fifty-one thousand, four hundred twenty-six".