142640074 has 8 divisors (see below), whose sum is σ = 214301088. Its totient is φ = 71206380.

The previous prime is 142640059. The next prime is 142640077. The reversal of 142640074 is 470046241.

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

It is not an unprimeable number, because it can be changed into a prime (142640077) 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, 55252 + ... + 57775.

It is an arithmetic number, because the mean of its divisors is an integer number (26787636).

Almost surely, 2^142640074 is an apocalyptic number.

142640074 is a deficient number, since it is larger than the sum of its proper divisors (71661014).

142640074 is a wasteful number, since it uses less digits than its factorization.

142640074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113660.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 142640074 is about 11943.2019994640. The cubic root of 142640074 is about 522.4930505856.

The spelling of 142640074 in words is "one hundred forty-two million, six hundred forty thousand, seventy-four".