642280740105 has 16 divisors (see below), whose sum is σ = 1052713799424. Its totient is φ = 334194856320.

The previous prime is 642280740029. The next prime is 642280740107. The reversal of 642280740105 is 501047082246.

It is not a de Polignac number, because 642280740105 - 2⁹ = 642280739593 is a prime.

It is a super-2 number, since 2×642280740105² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (642280740107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522178849 + ... + 522180078.

It is an arithmetic number, because the mean of its divisors is an integer number (65794612464).

Almost surely, 2^642280740105 is an apocalyptic number.

It is an amenable number.

642280740105 is a deficient number, since it is larger than the sum of its proper divisors (410433059319).

642280740105 is a wasteful number, since it uses less digits than its factorization.

642280740105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044358976.

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 642280740105 in words is "six hundred forty-two billion, two hundred eighty million, seven hundred forty thousand, one hundred five".