49542440 has 32 divisors (see below), whose sum is σ = 115317000. Its totient is φ = 19133184.

The previous prime is 49542421. The next prime is 49542463. The reversal of 49542440 is 4424594.

It can be written as a sum of positive squares in 4 ways, for example, as 34128964 + 15413476 = 5842^2 + 3926^2 .

It is a super-2 number, since 2×49542440² = 4908906722307200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49542397 and 49542406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20195 + ... + 22514.

Almost surely, 2^49542440 is an apocalyptic number.

49542440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49542440 is an abundant number, since it is smaller than the sum of its proper divisors (65774560).

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

49542440 is a wasteful number, since it uses less digits than its factorization.

49542440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42749 (or 42745 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 49542440 is about 7038.6390730027. The cubic root of 49542440 is about 367.2759273916.

The spelling of 49542440 in words is "forty-nine million, five hundred forty-two thousand, four hundred forty".