642340363043246 has 128 divisors (see below), whose sum is σ = 1221391896883200. Its totient is φ = 247091312332800.

The previous prime is 642340363043233. The next prime is 642340363043279.

642340363043246 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×642340363043246² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 642340363043194 and 642340363043203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 137862605 + ... + 142445703.

It is an arithmetic number, because the mean of its divisors is an integer number (9542124194400).

Almost surely, 2^{642340363043246} is an apocalyptic number.

642340363043246 is a deficient number, since it is larger than the sum of its proper divisors (579051533839954).

642340363043246 is a wasteful number, since it uses less digits than its factorization.

642340363043246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583490.

The product of its (nonzero) digits is 17915904, while the sum is 50.

The spelling of 642340363043246 in words is "six hundred forty-two trillion, three hundred forty billion, three hundred sixty-three million, forty-three thousand, two hundred forty-six".