102523390 has 16 divisors (see below), whose sum is σ = 187071408. Its totient is φ = 40447296.

The previous prime is 102523367. The next prime is 102523427. The reversal of 102523390 is 93325201.

It is a happy number.

It is a super-2 number, since 2×102523390² = 21022090994184200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69492 + ... + 70951.

It is an arithmetic number, because the mean of its divisors is an integer number (11691963).

Almost surely, 2^102523390 is an apocalyptic number.

102523390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102523390 is a deficient number, since it is larger than the sum of its proper divisors (84548018).

102523390 is a wasteful number, since it uses less digits than its factorization.

102523390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140523.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 102523390 is about 10125.3834495292. The cubic root of 102523390 is about 468.0306765145.

Adding to 102523390 its reverse (93325201), we get a palindrome (195848591).

The spelling of 102523390 in words is "one hundred two million, five hundred twenty-three thousand, three hundred ninety".