142737649 has 8 divisors (see below), whose sum is σ = 143956328. Its totient is φ = 141523200.

The previous prime is 142737631. The next prime is 142737653. The reversal of 142737649 is 946737241.

It can be written as a sum of positive squares in 4 ways, for example, as 102400 + 142635249 = 320^2 + 11943^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 142737649 - 2⁷ = 142737521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142737659) 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, 118249 + ... + 119449.

It is an arithmetic number, because the mean of its divisors is an integer number (17994541).

Almost surely, 2^142737649 is an apocalyptic number.

It is an amenable number.

142737649 is a deficient number, since it is larger than the sum of its proper divisors (1218679).

142737649 is a wasteful number, since it uses less digits than its factorization.

142737649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115.

The product of its digits is 254016, while the sum is 43.

The square root of 142737649 is about 11947.2862609046. The cubic root of 142737649 is about 522.6121630653.

The spelling of 142737649 in words is "one hundred forty-two million, seven hundred thirty-seven thousand, six hundred forty-nine".