9961542 has 48 divisors (see below), whose sum is σ = 22713600. Its totient is φ = 3271752.

The previous prime is 9961531. The next prime is 9961543. The reversal of 9961542 is 2451699.

It is a junction number, because it is equal to n+sod(n) for n = 9961497 and 9961506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9961543) 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, 49959 + ... + 50157.

It is an arithmetic number, because the mean of its divisors is an integer number (473200).

Almost surely, 2^9961542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9961542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11356800).

9961542 is an abundant number, since it is smaller than the sum of its proper divisors (12752058).

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

9961542 is a wasteful number, since it uses less digits than its factorization.

9961542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 307 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 9961542 is about 3156.1910588556. The cubic root of 9961542 is about 215.1669300307.

The spelling of 9961542 in words is "nine million, nine hundred sixty-one thousand, five hundred forty-two".