199542236 has 12 divisors (see below), whose sum is σ = 349428240. Its totient is φ = 99705600.

The previous prime is 199542223. The next prime is 199542241. The reversal of 199542236 is 632245991.

It is a junction number, because it is equal to n+sod(n) for n = 199542193 and 199542202.

It is a congruent number.

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, 9176 + ... + 21983.

It is an arithmetic number, because the mean of its divisors is an integer number (29119020).

Almost surely, 2^199542236 is an apocalyptic number.

It is an amenable number.

199542236 is a deficient number, since it is larger than the sum of its proper divisors (149886004).

199542236 is a wasteful number, since it uses less digits than its factorization.

199542236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32764 (or 32762 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 199542236 is about 14125.9419508930. The cubic root of 199542236 is about 584.3570367895.

The spelling of 199542236 in words is "one hundred ninety-nine million, five hundred forty-two thousand, two hundred thirty-six".