101840742 has 48 divisors (see below), whose sum is σ = 225145440. Its totient is φ = 33264000.

The previous prime is 101840729. The next prime is 101840743. The reversal of 101840742 is 247048101.

It is a super-2 number, since 2×101840742² = 20743073462221128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101840743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241692 + ... + 242112.

It is an arithmetic number, because the mean of its divisors is an integer number (4690530).

Almost surely, 2^101840742 is an apocalyptic number.

101840742 is an abundant number, since it is smaller than the sum of its proper divisors (123304698).

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

101840742 is a wasteful number, since it uses less digits than its factorization.

101840742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 101840742 is about 10091.6174124865. The cubic root of 101840742 is about 466.9895743599.

Adding to 101840742 its reverse (247048101), we get a palindrome (348888843).

The spelling of 101840742 in words is "one hundred one million, eight hundred forty thousand, seven hundred forty-two".