30651242 has 4 divisors (see below), whose sum is σ = 45976866. Its totient is φ = 15325620.

The previous prime is 30651241. The next prime is 30651251. The reversal of 30651242 is 24215603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28398241 + 2253001 = 5329^2 + 1501^2 .

It is a super-2 number, since 2×30651242² = 1878997272285128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30651241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7662809 + ... + 7662812.

Almost surely, 2^30651242 is an apocalyptic number.

30651242 is a deficient number, since it is larger than the sum of its proper divisors (15325624).

30651242 is a wasteful number, since it uses less digits than its factorization.

30651242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15325623.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30651242 is about 5536.3563830375. The cubic root of 30651242 is about 312.9555748821.

Adding to 30651242 its reverse (24215603), we get a palindrome (54866845).

The spelling of 30651242 in words is "thirty million, six hundred fifty-one thousand, two hundred forty-two".