42215550987 has 16 divisors (see below), whose sum is σ = 57136521248. Its totient is φ = 27720195840.

The previous prime is 42215550907. The next prime is 42215550991. The reversal of 42215550987 is 78905551224.

It is not a de Polignac number, because 42215550987 - 2¹¹ = 42215548939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42215550907) 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, 29037 + ... + 292017.

It is an arithmetic number, because the mean of its divisors is an integer number (3571032578).

Almost surely, 2^42215550987 is an apocalyptic number.

42215550987 is a deficient number, since it is larger than the sum of its proper divisors (14920970261).

42215550987 is a wasteful number, since it uses less digits than its factorization.

42215550987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263790.

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 42215550987 in words is "forty-two billion, two hundred fifteen million, five hundred fifty thousand, nine hundred eighty-seven".