137870187858542 has 4 divisors (see below), whose sum is σ = 206805281787816. Its totient is φ = 68935093929270.

The previous prime is 137870187858539. The next prime is 137870187858547. The reversal of 137870187858542 is 245858781078731.

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

It is a self number, because there is not a number n which added to its sum of digits gives 137870187858542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137870187858547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34467546964634 + ... + 34467546964637.

It is an arithmetic number, because the mean of its divisors is an integer number (51701320446954).

Almost surely, 2^{137870187858542} is an apocalyptic number.

137870187858542 is a deficient number, since it is larger than the sum of its proper divisors (68935093929274).

137870187858542 is an equidigital number, since it uses as much as digits as its factorization.

137870187858542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68935093929273.

The product of its (nonzero) digits is 842956800, while the sum is 74.

The spelling of 137870187858542 in words is "one hundred thirty-seven trillion, eight hundred seventy billion, one hundred eighty-seven million, eight hundred fifty-eight thousand, five hundred forty-two".