27457640142 has 16 divisors (see below), whose sum is σ = 54924182352. Its totient is φ = 9151063040.

The previous prime is 27457640141. The next prime is 27457640167. The reversal of 27457640142 is 24104675472.

It is a junction number, because it is equal to n+sod(n) for n = 27457640094 and 27457640103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27457640141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330483 + ... + 405134.

It is an arithmetic number, because the mean of its divisors is an integer number (3432761397).

Almost surely, 2^27457640142 is an apocalyptic number.

27457640142 is an abundant number, since it is smaller than the sum of its proper divisors (27466542210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27457640142 is a wasteful number, since it uses less digits than its factorization.

27457640142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741843.

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 27457640142 in words is "twenty-seven billion, four hundred fifty-seven million, six hundred forty thousand, one hundred forty-two".