121030420 has 24 divisors (see below), whose sum is σ = 290473344. Its totient is φ = 41496096.

The previous prime is 121030391. The next prime is 121030433. The reversal of 121030420 is 24030121.

It is a self number, because there is not a number n which added to its sum of digits gives 121030420.

It is a congruent number.

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, 432112 + ... + 432391.

It is an arithmetic number, because the mean of its divisors is an integer number (12103056).

Almost surely, 2^121030420 is an apocalyptic number.

121030420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121030420 is an abundant number, since it is smaller than the sum of its proper divisors (169442924).

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

121030420 is a wasteful number, since it uses less digits than its factorization.

121030420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864519 (or 864517 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 121030420 is about 11001.3826403775. The cubic root of 121030420 is about 494.6501898822.

Adding to 121030420 its reverse (24030121), we get a palindrome (145060541).

The spelling of 121030420 in words is "one hundred twenty-one million, thirty thousand, four hundred twenty".