102040537 has 4 divisors (see below), whose sum is σ = 102061620. Its totient is φ = 102019456.

The previous prime is 102040517. The next prime is 102040541. The reversal of 102040537 is 735040201.

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 57471561 + 44568976 = 7581^2 + 6676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102040537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102040517) 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, 753 + ... + 14305.

It is an arithmetic number, because the mean of its divisors is an integer number (25515405).

Almost surely, 2^102040537 is an apocalyptic number.

It is an amenable number.

102040537 is a deficient number, since it is larger than the sum of its proper divisors (21083).

102040537 is an equidigital number, since it uses as much as digits as its factorization.

102040537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21082.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 102040537 is about 10101.5116195548. The cubic root of 102040537 is about 467.2947607781.

Adding to 102040537 its reverse (735040201), we get a palindrome (837080738).

The spelling of 102040537 in words is "one hundred two million, forty thousand, five hundred thirty-seven".