101242450 has 72 divisors (see below), whose sum is σ = 204094080. Its totient is φ = 37346400.

The previous prime is 101242447. The next prime is 101242499. The reversal of 101242450 is 54242101.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 1281511 + ... + 1281589.

It is an arithmetic number, because the mean of its divisors is an integer number (2834640).

Almost surely, 2^101242450 is an apocalyptic number.

101242450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101242450 is an abundant number, since it is smaller than the sum of its proper divisors (102851630).

101242450 is a wasteful number, since it uses less digits than its factorization.

101242450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 101242450 is about 10061.9307292388. The cubic root of 101242450 is about 466.0732906148.

Adding to 101242450 its reverse (54242101), we get a palindrome (155484551).

The spelling of 101242450 in words is "one hundred one million, two hundred forty-two thousand, four hundred fifty".