30340942 has 4 divisors (see below), whose sum is σ = 45511416. Its totient is φ = 15170470.

The previous prime is 30340879. The next prime is 30340949. The reversal of 30340942 is 24904303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24904303 = 17 ⋅1464959.

It is a super-2 number, since 2×30340942² = 1841145522894728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30340949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7585234 + ... + 7585237.

It is an arithmetic number, because the mean of its divisors is an integer number (11377854).

Almost surely, 2^30340942 is an apocalyptic number.

30340942 is a deficient number, since it is larger than the sum of its proper divisors (15170474).

30340942 is a wasteful number, since it uses less digits than its factorization.

30340942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15170473.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 30340942 is about 5508.2612501587. The cubic root of 30340942 is about 311.8959150395.

The spelling of 30340942 in words is "thirty million, three hundred forty thousand, nine hundred forty-two".