142742737 has 4 divisors (see below), whose sum is σ = 142873956. Its totient is φ = 142611520.

The previous prime is 142742729. The next prime is 142742741. The reversal of 142742737 is 737247241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 737247241 = 4327 ⋅170383.

It can be written as a sum of positive squares in 2 ways, for example, as 85951441 + 56791296 = 9271^2 + 7536^2 .

It is a cyclic number.

It is not a de Polignac number, because 142742737 - 2³ = 142742729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142742696 and 142742705.

It is not an unprimeable number, because it can be changed into a prime (142742797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63964 + ... + 66157.

It is an arithmetic number, because the mean of its divisors is an integer number (35718489).

Almost surely, 2^142742737 is an apocalyptic number.

It is an amenable number.

142742737 is a deficient number, since it is larger than the sum of its proper divisors (131219).

142742737 is a wasteful number, since it uses less digits than its factorization.

142742737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131218.

The product of its digits is 65856, while the sum is 37.

The square root of 142742737 is about 11947.4991943921. The cubic root of 142742737 is about 522.6183726373.

Adding to 142742737 its reverse (737247241), we get a palindrome (879989978).

The spelling of 142742737 in words is "one hundred forty-two million, seven hundred forty-two thousand, seven hundred thirty-seven".