121301730 has 48 divisors (see below), whose sum is σ = 344058624. Its totient is φ = 29406240.

The previous prime is 121301723. The next prime is 121301731. The reversal of 121301730 is 37103121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121301731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60274 + ... + 62253.

It is an arithmetic number, because the mean of its divisors is an integer number (7167888).

Almost surely, 2^121301730 is an apocalyptic number.

121301730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121301730 is an abundant number, since it is smaller than the sum of its proper divisors (222756894).

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

121301730 is a wasteful number, since it uses less digits than its factorization.

121301730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122551 (or 122548 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 121301730 is about 11013.7064605881. The cubic root of 121301730 is about 495.0195278491.

Adding to 121301730 its reverse (37103121), we get a palindrome (158404851).

The spelling of 121301730 in words is "one hundred twenty-one million, three hundred one thousand, seven hundred thirty".