42261261836 has 12 divisors (see below), whose sum is σ = 74076691080. Its totient is φ = 21096492960.

The previous prime is 42261261829. The next prime is 42261261851. The reversal of 42261261836 is 63816216224.

It is a junction number, because it is equal to n+sod(n) for n = 42261261793 and 42261261802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8531705 + ... + 8536656.

It is an arithmetic number, because the mean of its divisors is an integer number (6173057590).

Almost surely, 2^42261261836 is an apocalyptic number.

It is an amenable number.

42261261836 is a deficient number, since it is larger than the sum of its proper divisors (31815429244).

42261261836 is a wasteful number, since it uses less digits than its factorization.

42261261836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17068984 (or 17068982 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The spelling of 42261261836 in words is "forty-two billion, two hundred sixty-one million, two hundred sixty-one thousand, eight hundred thirty-six".