340404754 has 4 divisors (see below), whose sum is σ = 510607134. Its totient is φ = 170202376.

The previous prime is 340404751. The next prime is 340404793. The reversal of 340404754 is 457404043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 457404043 = 19 ⋅24073897.

It can be written as a sum of positive squares in only one way, i.e., 332150625 + 8254129 = 18225^2 + 2873^2 .

It is a super-3 number, since 3×340404754³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (340404751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85101187 + ... + 85101190.

Almost surely, 2^340404754 is an apocalyptic number.

340404754 is a deficient number, since it is larger than the sum of its proper divisors (170202380).

340404754 is a wasteful number, since it uses less digits than its factorization.

340404754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170202379.

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 340404754 is about 18450.0610839097. The cubic root of 340404754 is about 698.2300550093.

Adding to 340404754 its reverse (457404043), we get a palindrome (797808797).

The spelling of 340404754 in words is "three hundred forty million, four hundred four thousand, seven hundred fifty-four".