1624437242 has 4 divisors (see below), whose sum is σ = 2436655866. Its totient is φ = 812218620.

The previous prime is 1624437209. The next prime is 1624437247. The reversal of 1624437242 is 2427344261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2427344261 = 23 ⋅105536707.

It can be written as a sum of positive squares in only one way, i.e., 1482327001 + 142110241 = 38501^2 + 11921^2 .

It is not an unprimeable number, because it can be changed into a prime (1624437247) 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, 406109309 + ... + 406109312.

Almost surely, 2^1624437242 is an apocalyptic number.

1624437242 is a deficient number, since it is larger than the sum of its proper divisors (812218624).

1624437242 is an equidigital number, since it uses as much as digits as its factorization.

1624437242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812218623.

The product of its digits is 64512, while the sum is 35.

The square root of 1624437242 is about 40304.3079831424. The cubic root of 1624437242 is about 1175.5316120464.

The spelling of 1624437242 in words is "one billion, six hundred twenty-four million, four hundred thirty-seven thousand, two hundred forty-two".