102240045 has 48 divisors (see below), whose sum is σ = 187799040. Its totient is φ = 51311232.

The previous prime is 102240011. The next prime is 102240053. The reversal of 102240045 is 540042201.

It is not a de Polignac number, because 102240045 - 2¹¹ = 102237997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168132 + ... + 168738.

It is an arithmetic number, because the mean of its divisors is an integer number (3912480).

Almost surely, 2^102240045 is an apocalyptic number.

102240045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102240045 is a deficient number, since it is larger than the sum of its proper divisors (85558995).

102240045 is a wasteful number, since it uses less digits than its factorization.

102240045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 102240045 is about 10111.3819530270. The cubic root of 102240045 is about 467.5991115516.

Adding to 102240045 its reverse (540042201), we get a palindrome (642282246).

The spelling of 102240045 in words is "one hundred two million, two hundred forty thousand, forty-five".