340660442 has 4 divisors (see below), whose sum is σ = 510990666. Its totient is φ = 170330220.

The previous prime is 340660423. The next prime is 340660471. The reversal of 340660442 is 244066043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244066043 = 13 ⋅18774311.

It can be written as a sum of positive squares in only one way, i.e., 203091001 + 137569441 = 14251^2 + 11729^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85165109 + ... + 85165112.

Almost surely, 2^340660442 is an apocalyptic number.

340660442 is a deficient number, since it is larger than the sum of its proper divisors (170330224).

340660442 is a wasteful number, since it uses less digits than its factorization.

340660442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170330223.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 340660442 is about 18456.9889743696. The cubic root of 340660442 is about 698.4048316180.

The spelling of 340660442 in words is "three hundred forty million, six hundred sixty thousand, four hundred forty-two".