194987542 has 8 divisors (see below), whose sum is σ = 299283336. Its totient is φ = 95226432.

The previous prime is 194987483. The next prime is 194987543. The reversal of 194987542 is 245789491.

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

It is a super-3 number, since 3×194987542³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194987543) 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, 1133563 + ... + 1133734.

It is an arithmetic number, because the mean of its divisors is an integer number (37410417).

Almost surely, 2^194987542 is an apocalyptic number.

194987542 is a deficient number, since it is larger than the sum of its proper divisors (104295794).

194987542 is a wasteful number, since it uses less digits than its factorization.

194987542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267342.

The product of its digits is 725760, while the sum is 49.

The square root of 194987542 is about 13963.7939686892. The cubic root of 194987542 is about 579.8766503444.

The spelling of 194987542 in words is "one hundred ninety-four million, nine hundred eighty-seven thousand, five hundred forty-two".