1421402393 has 2 divisors, whose sum is σ = 1421402394. Its totient is φ = 1421402392.

The previous prime is 1421402383. The next prime is 1421402417. The reversal of 1421402393 is 3932041241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1001849104 + 419553289 = 31652^2 + 20483^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421402393 - 2¹⁰ = 1421401369 is a prime.

It is a super-2 number, since 2×1421402393² = 4040769525652252898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421402363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710701196 + 710701197.

It is an arithmetic number, because the mean of its divisors is an integer number (710701197).

Almost surely, 2^1421402393 is an apocalyptic number.

It is an amenable number.

1421402393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421402393 is an equidigital number, since it uses as much as digits as its factorization.

1421402393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1421402393 is about 37701.4905938744. The cubic root of 1421402393 is about 1124.3607609275.

The spelling of 1421402393 in words is "one billion, four hundred twenty-one million, four hundred two thousand, three hundred ninety-three".