642105362 has 4 divisors (see below), whose sum is σ = 963158046. Its totient is φ = 321052680.

The previous prime is 642105353. The next prime is 642105367. The reversal of 642105362 is 263501246.

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., 590538601 + 51566761 = 24301^2 + 7181^2 .

It is not an unprimeable number, because it can be changed into a prime (642105367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160526339 + ... + 160526342.

Almost surely, 2^642105362 is an apocalyptic number.

642105362 is a deficient number, since it is larger than the sum of its proper divisors (321052684).

642105362 is a wasteful number, since it uses less digits than its factorization.

642105362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321052683.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 642105362 is about 25339.7979865665. The cubic root of 642105362 is about 862.7178135603.

The spelling of 642105362 in words is "six hundred forty-two million, one hundred five thousand, three hundred sixty-two".