142102537 has 4 divisors (see below), whose sum is σ = 143406340. Its totient is φ = 140798736.

The previous prime is 142102529. The next prime is 142102547. The reversal of 142102537 is 735201241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123232201 + 18870336 = 11101^2 + 4344^2 .

It is a cyclic number.

It is not a de Polignac number, because 142102537 - 2³ = 142102529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142102547) 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, 651738 + ... + 651955.

It is an arithmetic number, because the mean of its divisors is an integer number (35851585).

Almost surely, 2^142102537 is an apocalyptic number.

It is an amenable number.

142102537 is a deficient number, since it is larger than the sum of its proper divisors (1303803).

142102537 is a wasteful number, since it uses less digits than its factorization.

142102537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303802.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 142102537 is about 11920.6768683662. The cubic root of 142102537 is about 521.8358886247.

Adding to 142102537 its reverse (735201241), we get a palindrome (877303778).

The spelling of 142102537 in words is "one hundred forty-two million, one hundred two thousand, five hundred thirty-seven".