361997942 has 4 divisors (see below), whose sum is σ = 542996916. Its totient is φ = 180998970.

The previous prime is 361997917. The next prime is 361997947. The reversal of 361997942 is 249799163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249799163 = 10321 ⋅24203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361997947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90499484 + ... + 90499487.

It is an arithmetic number, because the mean of its divisors is an integer number (135749229).

Almost surely, 2^361997942 is an apocalyptic number.

361997942 is a deficient number, since it is larger than the sum of its proper divisors (180998974).

361997942 is a wasteful number, since it uses less digits than its factorization.

361997942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180998973.

The product of its digits is 734832, while the sum is 50.

The square root of 361997942 is about 19026.2435073243. The cubic root of 361997942 is about 712.6922461435.

The spelling of 361997942 in words is "three hundred sixty-one million, nine hundred ninety-seven thousand, nine hundred forty-two".