1534020121 has 12 divisors (see below), whose sum is σ = 1605735040. Its totient is φ = 1465386120.

The previous prime is 1534020091. The next prime is 1534020127. The reversal of 1534020121 is 1210204351.

It is not a de Polignac number, because 1534020121 - 2²¹ = 1531922969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1534020127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548236 + ... + 551026.

Almost surely, 2^1534020121 is an apocalyptic number.

It is an amenable number.

1534020121 is a deficient number, since it is larger than the sum of its proper divisors (71714919).

1534020121 is a wasteful number, since it uses less digits than its factorization.

1534020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876 (or 3853 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1534020121 is about 39166.5689204454. The cubic root of 1534020121 is about 1153.3037000992.

Adding to 1534020121 its reverse (1210204351), we get a palindrome (2744224472).

The spelling of 1534020121 in words is "one billion, five hundred thirty-four million, twenty thousand, one hundred twenty-one".