142640126 has 8 divisors (see below), whose sum is σ = 215853984. Its totient is φ = 70688800.

The previous prime is 142640123. The next prime is 142640161. The reversal of 142640126 is 621046241.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 142640095 and 142640104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142640123) 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, 315350 + ... + 315801.

It is an arithmetic number, because the mean of its divisors is an integer number (26981748).

Almost surely, 2^142640126 is an apocalyptic number.

142640126 is a deficient number, since it is larger than the sum of its proper divisors (73213858).

142640126 is a wasteful number, since it uses less digits than its factorization.

142640126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631266.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 142640126 is about 11943.2041764344. The cubic root of 142640126 is about 522.4931140779.

Adding to 142640126 its reverse (621046241), we get a palindrome (763686367).

The spelling of 142640126 in words is "one hundred forty-two million, six hundred forty thousand, one hundred twenty-six".