49742240 has 24 divisors (see below), whose sum is σ = 117516420. Its totient is φ = 19896832.

The previous prime is 49742237. The next prime is 49742243. The reversal of 49742240 is 4224794.

It is an interprime number because it is at equal distance from previous prime (49742237) and next prime (49742243).

It can be written as a sum of positive squares in 2 ways, for example, as 47169424 + 2572816 = 6868^2 + 1604^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 49742197 and 49742206.

It is not an unprimeable number, because it can be changed into a prime (49742243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155285 + ... + 155604.

Almost surely, 2^49742240 is an apocalyptic number.

49742240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49742240 is an abundant number, since it is smaller than the sum of its proper divisors (67774180).

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

49742240 is a wasteful number, since it uses less digits than its factorization.

49742240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310904 (or 310896 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 49742240 is about 7052.8178765654. The cubic root of 49742240 is about 367.7689949078.

The spelling of 49742240 in words is "forty-nine million, seven hundred forty-two thousand, two hundred forty".