142001740 has 24 divisors (see below), whose sum is σ = 299858832. Its totient is φ = 56485440.

The previous prime is 142001729. The next prime is 142001749. The reversal of 142001740 is 47100241.

It is not an unprimeable number, because it can be changed into a prime (142001749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15994 + ... + 23233.

It is an arithmetic number, because the mean of its divisors is an integer number (12494118).

Almost surely, 2^142001740 is an apocalyptic number.

142001740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142001740 is an abundant number, since it is smaller than the sum of its proper divisors (157857092).

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

142001740 is a wasteful number, since it uses less digits than its factorization.

142001740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39417 (or 39415 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 142001740 is about 11916.4482963675. The cubic root of 142001740 is about 521.7124755485.

Adding to 142001740 its reverse (47100241), we get a palindrome (189101981).

The spelling of 142001740 in words is "one hundred forty-two million, one thousand, seven hundred forty".