121277340 has 72 divisors (see below), whose sum is σ = 369886608. Its totient is φ = 32163840.

The previous prime is 121277339. The next prime is 121277357. The reversal of 121277340 is 43772121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32995 + ... + 36485.

It is an arithmetic number, because the mean of its divisors is an integer number (5137314).

Almost surely, 2^121277340 is an apocalyptic number.

121277340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121277340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184943304).

121277340 is an abundant number, since it is smaller than the sum of its proper divisors (248609268).

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

121277340 is a wasteful number, since it uses less digits than its factorization.

121277340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699 (or 3694 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 121277340 is about 11012.5991482483. The cubic root of 121277340 is about 494.9863479553.

The spelling of 121277340 in words is "one hundred twenty-one million, two hundred seventy-seven thousand, three hundred forty".