101249380 has 12 divisors (see below), whose sum is σ = 212623740. Its totient is φ = 40499744.

The previous prime is 101249371. The next prime is 101249383. The reversal of 101249380 is 83942101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32558436 + 68690944 = 5706^2 + 8288^2 .

It is not an unprimeable number, because it can be changed into a prime (101249383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531215 + ... + 2531254.

It is an arithmetic number, because the mean of its divisors is an integer number (17718645).

Almost surely, 2^101249380 is an apocalyptic number.

101249380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101249380 is an abundant number, since it is smaller than the sum of its proper divisors (111374360).

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

101249380 is a wasteful number, since it uses less digits than its factorization.

101249380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062478 (or 5062476 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 101249380 is about 10062.2750906542. The cubic root of 101249380 is about 466.0839245409.

The spelling of 101249380 in words is "one hundred one million, two hundred forty-nine thousand, three hundred eighty".