101245520 has 40 divisors (see below), whose sum is σ = 240413184. Its totient is φ = 39635072.

The previous prime is 101245513. The next prime is 101245537. The reversal of 101245520 is 25542101.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 101245492 and 101245501.

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, 9704 + ... + 17223.

Almost surely, 2^101245520 is an apocalyptic number.

101245520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101245520 is an abundant number, since it is smaller than the sum of its proper divisors (139167664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101245520 is a wasteful number, since it uses less digits than its factorization.

101245520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26987 (or 26981 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 101245520 is about 10062.0832832968. The cubic root of 101245520 is about 466.0780015193.

Adding to 101245520 its reverse (25542101), we get a palindrome (126787621).

The spelling of 101245520 in words is "one hundred one million, two hundred forty-five thousand, five hundred twenty".