340420073 has 8 divisors (see below), whose sum is σ = 389212992. Its totient is φ = 291667536.

The previous prime is 340420063. The next prime is 340420081. The reversal of 340420073 is 370024043.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340420073 - 2⁴ = 340420057 is a prime.

It is a super-2 number, since 2×340420073² = 231771652202650658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (340420043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10886 + ... + 28272.

It is an arithmetic number, because the mean of its divisors is an integer number (48651624).

Almost surely, 2^340420073 is an apocalyptic number.

It is an amenable number.

340420073 is a deficient number, since it is larger than the sum of its proper divisors (48792919).

340420073 is a wasteful number, since it uses less digits than its factorization.

340420073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20191.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 340420073 is about 18450.4762269162. The cubic root of 340420073 is about 698.2405288405.

The spelling of 340420073 in words is "three hundred forty million, four hundred twenty thousand, seventy-three".