142097649 has 8 divisors (see below), whose sum is σ = 194584320. Its totient is φ = 92171376.

The previous prime is 142097647. The next prime is 142097653. The reversal of 142097649 is 946790241.

142097649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142097649 - 2¹ = 142097647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142097649.

It is not an unprimeable number, because it can be changed into a prime (142097647) 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, 639969 + ... + 640190.

It is an arithmetic number, because the mean of its divisors is an integer number (24323040).

Almost surely, 2^142097649 is an apocalyptic number.

It is an amenable number.

142097649 is a deficient number, since it is larger than the sum of its proper divisors (52486671).

142097649 is a wasteful number, since it uses less digits than its factorization.

142097649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280199.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 142097649 is about 11920.4718446880. The cubic root of 142097649 is about 521.8299052385.

The spelling of 142097649 in words is "one hundred forty-two million, ninety-seven thousand, six hundred forty-nine".