1421400202 has 4 divisors (see below), whose sum is σ = 2132100306. Its totient is φ = 710700100.

The previous prime is 1421400181. The next prime is 1421400247. The reversal of 1421400202 is 2020041241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2020041241 = 8179 ⋅246979.

It can be written as a sum of positive squares in only one way, i.e., 1058916681 + 362483521 = 32541^2 + 19039^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355350049 + ... + 355350052.

Almost surely, 2^1421400202 is an apocalyptic number.

1421400202 is a deficient number, since it is larger than the sum of its proper divisors (710700104).

1421400202 is an equidigital number, since it uses as much as digits as its factorization.

1421400202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710700103.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1421400202 is about 37701.4615366566. The cubic root of 1421400202 is about 1124.3601832173.

Adding to 1421400202 its reverse (2020041241), we get a palindrome (3441441443).

The spelling of 1421400202 in words is "one billion, four hundred twenty-one million, four hundred thousand, two hundred two".