142253649309 has 8 divisors (see below), whose sum is σ = 189831327840. Its totient is φ = 94755868496.

The previous prime is 142253649281. The next prime is 142253649313. The reversal of 142253649309 is 903946352241.

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

It is a cyclic number.

It is not a de Polignac number, because 142253649309 - 2⁵ = 142253649277 is a prime.

It is a super-2 number, since 2×142253649309² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142253649319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19970274 + ... + 19977395.

It is an arithmetic number, because the mean of its divisors is an integer number (23728915980).

Almost surely, 2^142253649309 is an apocalyptic number.

It is an amenable number.

142253649309 is a deficient number, since it is larger than the sum of its proper divisors (47577678531).

142253649309 is a wasteful number, since it uses less digits than its factorization.

142253649309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39948859.

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 142253649309 in words is "one hundred forty-two billion, two hundred fifty-three million, six hundred forty-nine thousand, three hundred nine".