121999962 has 32 divisors (see below), whose sum is σ = 279506304. Its totient is φ = 34776000.

The previous prime is 121999961. The next prime is 121999963. The reversal of 121999962 is 269999121.

It is an interprime number because it is at equal distance from previous prime (121999961) and next prime (121999963).

It is not an unprimeable number, because it can be changed into a prime (121999961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16212 + ... + 22512.

It is an arithmetic number, because the mean of its divisors is an integer number (8734572).

Almost surely, 2^121999962 is an apocalyptic number.

121999962 is an abundant number, since it is smaller than the sum of its proper divisors (157506342).

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

121999962 is a wasteful number, since it uses less digits than its factorization.

121999962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6774.

The product of its digits is 157464, while the sum is 48.

The square root of 121999962 is about 11045.3592970080. The cubic root of 121999962 is about 495.9675148903.

Adding to 121999962 its sum of digits (48), we get a triangular number (122000010 = T₁₅₆₂₀).

The spelling of 121999962 in words is "one hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred sixty-two".