121671456 has 24 divisors (see below), whose sum is σ = 319387824. Its totient is φ = 40557120.

The previous prime is 121671409. The next prime is 121671479. The reversal of 121671456 is 654176121.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633610 + ... + 633801.

It is an arithmetic number, because the mean of its divisors is an integer number (13307826).

Almost surely, 2^121671456 is an apocalyptic number.

121671456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121671456 is an abundant number, since it is smaller than the sum of its proper divisors (197716368).

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

121671456 is a wasteful number, since it uses less digits than its factorization.

121671456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267424 (or 1267416 counting only the distinct ones).

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

The square root of 121671456 is about 11030.4785027668. The cubic root of 121671456 is about 495.5219552949.

The spelling of 121671456 in words is "one hundred twenty-one million, six hundred seventy-one thousand, four hundred fifty-six".