120140421 has 8 divisors (see below), whose sum is σ = 160263840. Its totient is φ = 80055312.

The previous prime is 120140387. The next prime is 120140429. The reversal of 120140421 is 124041021.

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

It is not a de Polignac number, because 120140421 - 2¹¹ = 120138373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120140421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120140429) 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, 1215 + ... + 15548.

It is an arithmetic number, because the mean of its divisors is an integer number (20032980).

Almost surely, 2^120140421 is an apocalyptic number.

It is an amenable number.

120140421 is a deficient number, since it is larger than the sum of its proper divisors (40123419).

120140421 is a wasteful number, since it uses less digits than its factorization.

120140421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19155.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 120140421 is about 10960.8585886326. The cubic root of 120140421 is about 493.4347331845.

Adding to 120140421 its reverse (124041021), we get a palindrome (244181442).

The spelling of 120140421 in words is "one hundred twenty million, one hundred forty thousand, four hundred twenty-one".