1420604121 has 32 divisors (see below), whose sum is σ = 2013984000. Its totient is φ = 889118720.

The previous prime is 1420604111. The next prime is 1420604137. The reversal of 1420604121 is 1214060241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1420604121 - 2⁵ = 1420604089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420604111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1601140 + ... + 1602026.

It is an arithmetic number, because the mean of its divisors is an integer number (62937000).

Almost surely, 2^1420604121 is an apocalyptic number.

It is an amenable number.

1420604121 is a deficient number, since it is larger than the sum of its proper divisors (593379879).

1420604121 is a wasteful number, since it uses less digits than its factorization.

1420604121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1420604121 is about 37690.9023638331. The cubic root of 1420604121 is about 1124.1502379038.

Adding to 1420604121 its reverse (1214060241), we get a palindrome (2634664362).

The spelling of 1420604121 in words is "one billion, four hundred twenty million, six hundred four thousand, one hundred twenty-one".