121141503423 has 32 divisors (see below), whose sum is σ = 185432883200. Its totient is φ = 78082120800.

The previous prime is 121141503407. The next prime is 121141503433. The reversal of 121141503423 is 324305141121.

121141503423 is a `hidden beast` number, since 1 + 2 + 114 + 1 + 503 + 42 + 3 = 666.

It is not a de Polignac number, because 121141503423 - 2⁴ = 121141503407 is a prime.

It is a super-3 number, since 3×121141503423³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121141503433) 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, 827058 + ... + 962448.

It is an arithmetic number, because the mean of its divisors is an integer number (5794777600).

Almost surely, 2^121141503423 is an apocalyptic number.

121141503423 is a deficient number, since it is larger than the sum of its proper divisors (64291379777).

121141503423 is a wasteful number, since it uses less digits than its factorization.

121141503423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136500 (or 136494 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 121141503423 its reverse (324305141121), we get a palindrome (445446644544).

The spelling of 121141503423 in words is "one hundred twenty-one billion, one hundred forty-one million, five hundred three thousand, four hundred twenty-three".