1402432121 has 2 divisors, whose sum is σ = 1402432122. Its totient is φ = 1402432120.

The previous prime is 1402432091. The next prime is 1402432133. The reversal of 1402432121 is 1212342041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964785721 + 437646400 = 31061^2 + 20920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402432121 - 2¹⁴ = 1402415737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1402432093 and 1402432102.

It is not a weakly prime, because it can be changed into another prime (1402432621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701216060 + 701216061.

It is an arithmetic number, because the mean of its divisors is an integer number (701216061).

Almost surely, 2^1402432121 is an apocalyptic number.

It is an amenable number.

1402432121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402432121 is an equidigital number, since it uses as much as digits as its factorization.

1402432121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1402432121 is about 37449.0603486923. The cubic root of 1402432121 is about 1119.3363737109.

Adding to 1402432121 its reverse (1212342041), we get a palindrome (2614774162).

The spelling of 1402432121 in words is "one billion, four hundred two million, four hundred thirty-two thousand, one hundred twenty-one".