120121403 has 8 divisors (see below), whose sum is σ = 123475968. Its totient is φ = 116792424.

The previous prime is 120121399. The next prime is 120121409. The reversal of 120121403 is 304121021.

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

It is a cyclic number.

It is not a de Polignac number, because 120121403 - 2² = 120121399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121409) 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, 3326 + ... + 15852.

It is an arithmetic number, because the mean of its divisors is an integer number (15434496).

Almost surely, 2^120121403 is an apocalyptic number.

120121403 is a deficient number, since it is larger than the sum of its proper divisors (3354565).

120121403 is a wasteful number, since it uses less digits than its factorization.

120121403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 120121403 is about 10959.9910127700. The cubic root of 120121403 is about 493.4086952175.

Adding to 120121403 its reverse (304121021), we get a palindrome (424242424).

The spelling of 120121403 in words is "one hundred twenty million, one hundred twenty-one thousand, four hundred three".