142194605 has 16 divisors (see below), whose sum is σ = 196504704. Its totient is φ = 96757440.

The previous prime is 142194587. The next prime is 142194607. The reversal of 142194605 is 506491241.

It is not a de Polignac number, because 142194605 - 2¹⁶ = 142129069 is a prime.

It is a super-2 number, since 2×142194605² = 40438611382212050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142194607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10922 + ... + 20091.

It is an arithmetic number, because the mean of its divisors is an integer number (12281544).

Almost surely, 2^142194605 is an apocalyptic number.

It is an amenable number.

142194605 is a deficient number, since it is larger than the sum of its proper divisors (54310099).

142194605 is a wasteful number, since it uses less digits than its factorization.

142194605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31156.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 142194605 is about 11924.5379365408. The cubic root of 142194605 is about 521.9485631657.

The spelling of 142194605 in words is "one hundred forty-two million, one hundred ninety-four thousand, six hundred five".