1421662426 has 8 divisors (see below), whose sum is σ = 2148059700. Its totient is φ = 705642528.

The previous prime is 1421662423. The next prime is 1421662531. The reversal of 1421662426 is 6242661241.

It can be written as a sum of positive squares in 2 ways, for example, as 1421365401 + 297025 = 37701^2 + 545^2 .

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

It is a super-2 number, since 2×1421662426² = 4042248107000410952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421662391 and 1421662400.

It is not an unprimeable number, because it can be changed into a prime (1421662423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2594001 + ... + 2594548.

Almost surely, 2^1421662426 is an apocalyptic number.

1421662426 is a deficient number, since it is larger than the sum of its proper divisors (726397274).

1421662426 is a wasteful number, since it uses less digits than its factorization.

1421662426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188688.

The product of its digits is 27648, while the sum is 34.

The square root of 1421662426 is about 37704.9390133441. The cubic root of 1421662426 is about 1124.4293207001.

The spelling of 1421662426 in words is "one billion, four hundred twenty-one million, six hundred sixty-two thousand, four hundred twenty-six".