121342403 has 16 divisors (see below), whose sum is σ = 149929920. Its totient is φ = 95630976.

The previous prime is 121342393. The next prime is 121342421. The reversal of 121342403 is 304243121.

It is not a de Polignac number, because 121342403 - 2¹² = 121338307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121342483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22001 + ... + 26957.

It is an arithmetic number, because the mean of its divisors is an integer number (9370620).

Almost surely, 2^121342403 is an apocalyptic number.

121342403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121342403 is a deficient number, since it is larger than the sum of its proper divisors (28587517).

121342403 is a wasteful number, since it uses less digits than its factorization.

121342403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5246.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 121342403 is about 11015.5527777774. The cubic root of 121342403 is about 495.0748490699.

Adding to 121342403 its reverse (304243121), we get a palindrome (425585524).

The spelling of 121342403 in words is "one hundred twenty-one million, three hundred forty-two thousand, four hundred three".