981737242 has 4 divisors (see below), whose sum is σ = 1472605866. Its totient is φ = 490868620.

The previous prime is 981737231. The next prime is 981737249. The reversal of 981737242 is 242737189.

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

It can be written as a sum of positive squares in only one way, i.e., 623051521 + 358685721 = 24961^2 + 18939^2 .

It is not an unprimeable number, because it can be changed into a prime (981737249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245434309 + ... + 245434312.

Almost surely, 2^981737242 is an apocalyptic number.

981737242 is a deficient number, since it is larger than the sum of its proper divisors (490868624).

981737242 is a wasteful number, since it uses less digits than its factorization.

981737242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490868623.

The product of its digits is 169344, while the sum is 43.

The square root of 981737242 is about 31332.6864791387. The cubic root of 981737242 is about 993.8749746599.

The spelling of 981737242 in words is "nine hundred eighty-one million, seven hundred thirty-seven thousand, two hundred forty-two".