121546690 has 8 divisors (see below), whose sum is σ = 218784060. Its totient is φ = 48618672.

The previous prime is 121546687. The next prime is 121546693. The reversal of 121546690 is 96645121.

It is an interprime number because it is at equal distance from previous prime (121546687) and next prime (121546693).

It can be written as a sum of positive squares in 2 ways, for example, as 120055849 + 1490841 = 10957^2 + 1221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121546690² = 29547195699912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121546693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6077325 + ... + 6077344.

Almost surely, 2^121546690 is an apocalyptic number.

121546690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121546690 is a deficient number, since it is larger than the sum of its proper divisors (97237370).

121546690 is a wasteful number, since it uses less digits than its factorization.

121546690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12154676.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 121546690 is about 11024.8215405058. The cubic root of 121546690 is about 495.3525224123.

The spelling of 121546690 in words is "one hundred twenty-one million, five hundred forty-six thousand, six hundred ninety".