102742510 has 16 divisors (see below), whose sum is σ = 199162656. Its totient is φ = 37935648.

The previous prime is 102742499. The next prime is 102742511. The reversal of 102742510 is 15247201.

It is a happy number.

It is a super-2 number, since 2×102742510² = 21112046722200200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102742511) 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, 395034 + ... + 395293.

It is an arithmetic number, because the mean of its divisors is an integer number (12447666).

Almost surely, 2^102742510 is an apocalyptic number.

102742510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102742510 is a deficient number, since it is larger than the sum of its proper divisors (96420146).

102742510 is a wasteful number, since it uses less digits than its factorization.

102742510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790347.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 102742510 is about 10136.1980051694. The cubic root of 102742510 is about 468.3638749714.

Adding to 102742510 its reverse (15247201), we get a palindrome (117989711).

The spelling of 102742510 in words is "one hundred two million, seven hundred forty-two thousand, five hundred ten".