102240147 has 16 divisors (see below), whose sum is σ = 139265280. Its totient is φ = 66703392.

The previous prime is 102240143. The next prime is 102240157. The reversal of 102240147 is 741042201.

It is a happy number.

It is not a de Polignac number, because 102240147 - 2² = 102240143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102240143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25258 + ... + 29024.

It is an arithmetic number, because the mean of its divisors is an integer number (8704080).

Almost surely, 2^102240147 is an apocalyptic number.

102240147 is a deficient number, since it is larger than the sum of its proper divisors (37025133).

102240147 is a wasteful number, since it uses less digits than its factorization.

102240147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 102240147 is about 10111.3869968467. The cubic root of 102240147 is about 467.5992670519.

Adding to 102240147 its reverse (741042201), we get a palindrome (843282348).

The spelling of 102240147 in words is "one hundred two million, two hundred forty thousand, one hundred forty-seven".