649229142 has 64 divisors (see below), whose sum is σ = 1393459200. Its totient is φ = 201177504.

The previous prime is 649229123. The next prime is 649229149. The reversal of 649229142 is 241922946.

It is a self number, because there is not a number n which added to its sum of digits gives 649229142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649229149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1290463 + ... + 1290965.

It is an arithmetic number, because the mean of its divisors is an integer number (21772800).

Almost surely, 2^649229142 is an apocalyptic number.

649229142 is an abundant number, since it is smaller than the sum of its proper divisors (744230058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649229142 is a wasteful number, since it uses less digits than its factorization.

649229142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its digits is 62208, while the sum is 39.

The square root of 649229142 is about 25479.9753139598. The cubic root of 649229142 is about 865.8965353477.

The spelling of 649229142 in words is "six hundred forty-nine million, two hundred twenty-nine thousand, one hundred forty-two".