1402421434 has 16 divisors (see below), whose sum is σ = 2163370248. Its totient is φ = 681348672.

The previous prime is 1402421429. The next prime is 1402421437. The reversal of 1402421434 is 4341242041.

It can be written as a sum of positive squares in 4 ways, for example, as 979502209 + 422919225 = 31297^2 + 20565^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1402421399 and 1402421408.

It is not an unprimeable number, because it can be changed into a prime (1402421437) 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, 44944 + ... + 69460.

Almost surely, 2^1402421434 is an apocalyptic number.

1402421434 is a deficient number, since it is larger than the sum of its proper divisors (760948814).

1402421434 is a wasteful number, since it uses less digits than its factorization.

1402421434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25329.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1402421434 is about 37448.9176612623. The cubic root of 1402421434 is about 1119.3335304650. Note that the first 3 decimals are identical.

Adding to 1402421434 its reverse (4341242041), we get a palindrome (5743663475).

The spelling of 1402421434 in words is "one billion, four hundred two million, four hundred twenty-one thousand, four hundred thirty-four".