249132066542 has 4 divisors (see below), whose sum is σ = 373698099816. Its totient is φ = 124566033270.

The previous prime is 249132066509. The next prime is 249132066559. The reversal of 249132066542 is 245660231942.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 249132066493 and 249132066502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62283016634 + ... + 62283016637.

It is an arithmetic number, because the mean of its divisors is an integer number (93424524954).

Almost surely, 2^249132066542 is an apocalyptic number.

249132066542 is a deficient number, since it is larger than the sum of its proper divisors (124566033274).

249132066542 is a wasteful number, since it uses less digits than its factorization.

249132066542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124566033273.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 249132066542 in words is "two hundred forty-nine billion, one hundred thirty-two million, sixty-six thousand, five hundred forty-two".