49721742 has 64 divisors (see below), whose sum is σ = 127104000. Its totient is φ = 14113440.

The previous prime is 49721741. The next prime is 49721761. The reversal of 49721742 is 24712794.

It is a junction number, because it is equal to n+sod(n) for n = 49721697 and 49721706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49721741) 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, 74892 + ... + 75552.

It is an arithmetic number, because the mean of its divisors is an integer number (1986000).

Almost surely, 2^49721742 is an apocalyptic number.

49721742 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 49721742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63552000).

49721742 is an abundant number, since it is smaller than the sum of its proper divisors (77382258).

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

49721742 is a wasteful number, since it uses less digits than its factorization.

49721742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 872 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 49721742 is about 7051.3645487948. The cubic root of 49721742 is about 367.7184706813.

The spelling of 49721742 in words is "forty-nine million, seven hundred twenty-one thousand, seven hundred forty-two".