30957242 has 4 divisors (see below), whose sum is σ = 46435866. Its totient is φ = 15478620.

The previous prime is 30957233. The next prime is 30957253. The reversal of 30957242 is 24275903.

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: 24275903 = 113 ⋅214831.

It can be written as a sum of positive squares in only one way, i.e., 30813601 + 143641 = 5551^2 + 379^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30957199 and 30957208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7739309 + ... + 7739312.

Almost surely, 2^30957242 is an apocalyptic number.

30957242 is a deficient number, since it is larger than the sum of its proper divisors (15478624).

30957242 is a wasteful number, since it uses less digits than its factorization.

30957242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15478623.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 30957242 is about 5563.9232561206. The cubic root of 30957242 is about 313.9935695872.

The spelling of 30957242 in words is "thirty million, nine hundred fifty-seven thousand, two hundred forty-two".