121226040 has 96 divisors (see below), whose sum is σ = 424307520. Its totient is φ = 29839104.

The previous prime is 121226029. The next prime is 121226047. The reversal of 121226040 is 40622121.

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

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121226047) 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, 8272 + ... + 17631.

It is an arithmetic number, because the mean of its divisors is an integer number (4419870).

Almost surely, 2^121226040 is an apocalyptic number.

121226040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121226040 is an abundant number, since it is smaller than the sum of its proper divisors (303081480).

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

121226040 is a wasteful number, since it uses less digits than its factorization.

121226040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25933 (or 25926 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121226040 is about 11010.2697514639. The cubic root of 121226040 is about 494.9165454655.

Adding to 121226040 its reverse (40622121), we get a palindrome (161848161).

The spelling of 121226040 in words is "one hundred twenty-one million, two hundred twenty-six thousand, forty".