1421000121 has 8 divisors (see below), whose sum is σ = 1895916960. Its totient is φ = 946708352.

The previous prime is 1421000111. The next prime is 1421000123. The reversal of 1421000121 is 1210001241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421000121 - 2⁶ = 1421000057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1421000097 and 1421000106.

It is not an unprimeable number, because it can be changed into a prime (1421000123) 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, 150936 + ... + 160073.

It is an arithmetic number, because the mean of its divisors is an integer number (236989620).

Almost surely, 2^1421000121 is an apocalyptic number.

It is an amenable number.

1421000121 is a deficient number, since it is larger than the sum of its proper divisors (474916839).

1421000121 is a wasteful number, since it uses less digits than its factorization.

1421000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312535.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1421000121 is about 37696.1552548798. The cubic root of 1421000121 is about 1124.2546822338.

Adding to 1421000121 its reverse (1210001241), we get a palindrome (2631001362).

The spelling of 1421000121 in words is "one billion, four hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.