101252540 has 24 divisors (see below), whose sum is σ = 212823072. Its totient is φ = 40464320.

The previous prime is 101252531. The next prime is 101252549. The reversal of 101252540 is 45252101.

It is an interprime number because it is at equal distance from previous prime (101252531) and next prime (101252549).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101252549) 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, 35570 + ... + 38310.

It is an arithmetic number, because the mean of its divisors is an integer number (8867628).

Almost surely, 2^101252540 is an apocalyptic number.

101252540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101252540 is an abundant number, since it is smaller than the sum of its proper divisors (111570532).

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

101252540 is a wasteful number, since it uses less digits than its factorization.

101252540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4597 (or 4595 counting only the distinct ones).

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

The square root of 101252540 is about 10062.4321115722. The cubic root of 101252540 is about 466.0887733274.

The spelling of 101252540 in words is "one hundred one million, two hundred fifty-two thousand, five hundred forty".