101543994 has 24 divisors (see below), whose sum is σ = 223298400. Its totient is φ = 33342408.

The previous prime is 101543983. The next prime is 101544019. The reversal of 101543994 is 499345101.

It is a happy number.

101543994 is a `hidden beast` number, since 101 + 543 + 9 + 9 + 4 = 666.

It is a super-2 number, since 2×101543994² = 20622365434944072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40894 + ... + 43305.

It is an arithmetic number, because the mean of its divisors is an integer number (9304100).

Almost surely, 2^101543994 is an apocalyptic number.

101543994 is an abundant number, since it is smaller than the sum of its proper divisors (121754406).

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

101543994 is a wasteful number, since it uses less digits than its factorization.

101543994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84274 (or 84271 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 101543994 is about 10076.9039888251. The cubic root of 101543994 is about 466.5355548905.

The spelling of 101543994 in words is "one hundred one million, five hundred forty-three thousand, nine hundred ninety-four".