121426550 has 24 divisors (see below), whose sum is σ = 258118896. Its totient is φ = 41631840.

The previous prime is 121426541. The next prime is 121426559. The reversal of 121426550 is 55624121.

It is an interprime number because it is at equal distance from previous prime (121426541) and next prime (121426559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121426559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173117 + ... + 173816.

It is an arithmetic number, because the mean of its divisors is an integer number (10754954).

Almost surely, 2^121426550 is an apocalyptic number.

121426550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121426550 is an abundant number, since it is smaller than the sum of its proper divisors (136692346).

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

121426550 is a wasteful number, since it uses less digits than its factorization.

121426550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346952 (or 346947 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 121426550 is about 11019.3715791782. The cubic root of 121426550 is about 495.1892620486.

The spelling of 121426550 in words is "one hundred twenty-one million, four hundred twenty-six thousand, five hundred fifty".