1430202121 has 4 divisors (see below), whose sum is σ = 1430324244. Its totient is φ = 1430080000.

The previous prime is 1430202119. The next prime is 1430202161. The reversal of 1430202121 is 1212020341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 378108025 + 1052094096 = 19445^2 + 32436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1430202121 - 2¹ = 1430202119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1430202095 and 1430202104.

It is not an unprimeable number, because it can be changed into a prime (1430202161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41380 + ... + 67621.

It is an arithmetic number, because the mean of its divisors is an integer number (357581061).

Almost surely, 2^1430202121 is an apocalyptic number.

It is an amenable number.

1430202121 is a deficient number, since it is larger than the sum of its proper divisors (122123).

1430202121 is a wasteful number, since it uses less digits than its factorization.

1430202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122122.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1430202121 is about 37818.0131815515. The cubic root of 1430202121 is about 1126.6762490675.

Adding to 1430202121 its reverse (1212020341), we get a palindrome (2642222462).

The spelling of 1430202121 in words is "one billion, four hundred thirty million, two hundred two thousand, one hundred twenty-one".