1442120121 has 48 divisors (see below), whose sum is σ = 2394887040. Its totient is φ = 828817920.

The previous prime is 1442120063. The next prime is 1442120131. The reversal of 1442120121 is 1210212441.

1442120121 is a `hidden beast` number, since 1 + 442 + 1 + 201 + 21 = 666.

It is not a de Polignac number, because 1442120121 - 2¹⁴ = 1442103737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1442120094 and 1442120103.

It is not an unprimeable number, because it can be changed into a prime (1442120131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153265 + ... + 162401.

It is an arithmetic number, because the mean of its divisors is an integer number (49893480).

Almost surely, 2^1442120121 is an apocalyptic number.

It is an amenable number.

1442120121 is a deficient number, since it is larger than the sum of its proper divisors (952766919).

1442120121 is a wasteful number, since it uses less digits than its factorization.

1442120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9246 (or 9243 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1442120121 is about 37975.2566943266. The cubic root of 1442120121 is about 1129.7971601875.

Adding to 1442120121 its reverse (1210212441), we get a palindrome (2652332562).

The spelling of 1442120121 in words is "one billion, four hundred forty-two million, one hundred twenty thousand, one hundred twenty-one".