121361420 has 24 divisors (see below), whose sum is σ = 255109344. Its totient is φ = 48496896.

The previous prime is 121361399. The next prime is 121361431. The reversal of 121361420 is 24163121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121361392 and 121361401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23732 + ... + 28388.

It is an arithmetic number, because the mean of its divisors is an integer number (10629556).

Almost surely, 2^121361420 is an apocalyptic number.

121361420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121361420 is an abundant number, since it is smaller than the sum of its proper divisors (133747924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121361420 is a wasteful number, since it uses less digits than its factorization.

121361420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5969 (or 5967 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 121361420 is about 11016.4159325980. The cubic root of 121361420 is about 495.1007107263.

The spelling of 121361420 in words is "one hundred twenty-one million, three hundred sixty-one thousand, four hundred twenty".