42370981949 has 4 divisors (see below), whose sum is σ = 42373679964. Its totient is φ = 42368283936.

The previous prime is 42370981937. The next prime is 42370981969. The reversal of 42370981949 is 94918907324.

42370981949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22874445049 + 19496536900 = 151243^2 + 139630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42370981949 is a prime.

It is a super-2 number, since 2×42370981949² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42370981894 and 42370981903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42370981909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325312 + ... + 1356905.

It is an arithmetic number, because the mean of its divisors is an integer number (10593419991).

Almost surely, 2^42370981949 is an apocalyptic number.

It is an amenable number.

42370981949 is a deficient number, since it is larger than the sum of its proper divisors (2698015).

42370981949 is a wasteful number, since it uses less digits than its factorization.

42370981949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698014.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 42370981949 in words is "forty-two billion, three hundred seventy million, nine hundred eighty-one thousand, nine hundred forty-nine".