9961742 has 16 divisors (see below), whose sum is σ = 17295360. Its totient is φ = 4214808.

The previous prime is 9961739. The next prime is 9961771. The reversal of 9961742 is 2471699.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9961696 and 9961705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3398 + ... + 5609.

It is an arithmetic number, because the mean of its divisors is an integer number (1080960).

Almost surely, 2^9961742 is an apocalyptic number.

9961742 is a deficient number, since it is larger than the sum of its proper divisors (7333618).

9961742 is a wasteful number, since it uses less digits than its factorization.

9961742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9095.

The product of its digits is 27216, while the sum is 38.

The square root of 9961742 is about 3156.2227424566. Note that the first 3 decimals coincide. The cubic root of 9961742 is about 215.1683700052.

The spelling of 9961742 in words is "nine million, nine hundred sixty-one thousand, seven hundred forty-two".