101243493 has 32 divisors (see below), whose sum is σ = 168564480. Its totient is φ = 59590080.

The previous prime is 101243479. The next prime is 101243501. The reversal of 101243493 is 394342101.

It is not a de Polignac number, because 101243493 - 2⁸ = 101243237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101243413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1803 + ... + 14343.

It is an arithmetic number, because the mean of its divisors is an integer number (5267640).

Almost surely, 2^101243493 is an apocalyptic number.

101243493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

101243493 is a deficient number, since it is larger than the sum of its proper divisors (67320987).

101243493 is a wasteful number, since it uses less digits than its factorization.

101243493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12586 (or 12580 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 101243493 is about 10061.9825581244. The cubic root of 101243493 is about 466.0748911054.

Adding to 101243493 its reverse (394342101), we get a palindrome (495585594).

The spelling of 101243493 in words is "one hundred one million, two hundred forty-three thousand, four hundred ninety-three".