142246742 has 16 divisors (see below), whose sum is σ = 235386000. Its totient is φ = 63930240.

The previous prime is 142246739. The next prime is 142246747. The reversal of 142246742 is 247642241.

It is a super-2 number, since 2×142246742² = 40468271219229128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142246699 and 142246708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142246747) 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, 34367 + ... + 38282.

It is an arithmetic number, because the mean of its divisors is an integer number (14711625).

Almost surely, 2^142246742 is an apocalyptic number.

142246742 is a deficient number, since it is larger than the sum of its proper divisors (93139258).

142246742 is a wasteful number, since it uses less digits than its factorization.

142246742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72751.

The product of its digits is 21504, while the sum is 32.

The square root of 142246742 is about 11926.7238586294. The cubic root of 142246742 is about 522.0123478336.

Adding to 142246742 its reverse (247642241), we get a palindrome (389888983).

The spelling of 142246742 in words is "one hundred forty-two million, two hundred forty-six thousand, seven hundred forty-two".