121402050 has 192 divisors, whose sum is σ = 392546304. Its totient is φ = 24076800.

The previous prime is 121402019. The next prime is 121402051. The reversal of 121402050 is 50204121.

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

It is not an unprimeable number, because it can be changed into a prime (121402051) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 265422 + ... + 265878.

It is an arithmetic number, because the mean of its divisors is an integer number (2044512).

Almost surely, 2^121402050 is an apocalyptic number.

121402050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121402050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196273152).

121402050 is an abundant number, since it is smaller than the sum of its proper divisors (271144254).

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

121402050 is a wasteful number, since it uses less digits than its factorization.

121402050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 121402050 is about 11018.2598444582. The cubic root of 121402050 is about 495.1559553487.

Adding to 121402050 its reverse (50204121), we get a palindrome (171606171).

The spelling of 121402050 in words is "one hundred twenty-one million, four hundred two thousand, fifty".