1642751234 has 8 divisors (see below), whose sum is σ = 2530724988. Its totient is φ = 799176240.

The previous prime is 1642751233. The next prime is 1642751237. The reversal of 1642751234 is 4321572461.

It can be written as a sum of positive squares in 2 ways, for example, as 1413985609 + 228765625 = 37603^2 + 15125^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1642751194 and 1642751203.

It is not an unprimeable number, because it can be changed into a prime (1642751233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11099597 + ... + 11099744.

Almost surely, 2^1642751234 is an apocalyptic number.

1642751234 is a deficient number, since it is larger than the sum of its proper divisors (887973754).

1642751234 is a wasteful number, since it uses less digits than its factorization.

1642751234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22199380.

The product of its digits is 40320, while the sum is 35.

The square root of 1642751234 is about 40530.8676689755. The cubic root of 1642751234 is about 1179.9327822479.

The spelling of 1642751234 in words is "one billion, six hundred forty-two million, seven hundred fifty-one thousand, two hundred thirty-four".