121400430 has 32 divisors (see below), whose sum is σ = 292418208. Its totient is φ = 32256000.

The previous prime is 121400429. The next prime is 121400437. The reversal of 121400430 is 34004121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121400437) 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, 1230 + ... + 15630.

It is an arithmetic number, because the mean of its divisors is an integer number (9138069).

Almost surely, 2^121400430 is an apocalyptic number.

121400430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121400430 is an abundant number, since it is smaller than the sum of its proper divisors (171017778).

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

121400430 is a wasteful number, since it uses less digits than its factorization.

121400430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14692.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 121400430 is about 11018.1863298821. The cubic root of 121400430 is about 495.1537528702.

Adding to 121400430 its reverse (34004121), we get a palindrome (155404551).

The spelling of 121400430 in words is "one hundred twenty-one million, four hundred thousand, four hundred thirty".