121495740 has 36 divisors (see below), whose sum is σ = 340427304. Its totient is φ = 32376096.

The previous prime is 121495739. The next prime is 121495741. The reversal of 121495740 is 47594121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121495739) and next prime (121495741).

It is a super-2 number, since 2×121495740² = 29522429676295200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121495741) 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, 84669 + ... + 86091.

It is an arithmetic number, because the mean of its divisors is an integer number (9456314).

Almost surely, 2^121495740 is an apocalyptic number.

121495740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121495740 is an abundant number, since it is smaller than the sum of its proper divisors (218931564).

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

121495740 is an equidigital number, since it uses as much as digits as its factorization.

121495740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 121495740 is about 11022.5106033063. The cubic root of 121495740 is about 495.2832987027.

The spelling of 121495740 in words is "one hundred twenty-one million, four hundred ninety-five thousand, seven hundred forty".