137487801442 has 4 divisors (see below), whose sum is σ = 206231702166. Its totient is φ = 68743900720.

The previous prime is 137487801419. The next prime is 137487801449. The reversal of 137487801442 is 244108784731.

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

It can be written as a sum of positive squares in only one way, i.e., 118617559281 + 18870242161 = 344409^2 + 137369^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (137487801449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34371950359 + ... + 34371950362.

Almost surely, 2^137487801442 is an apocalyptic number.

137487801442 is a deficient number, since it is larger than the sum of its proper divisors (68743900724).

137487801442 is an equidigital number, since it uses as much as digits as its factorization.

137487801442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68743900723.

The product of its (nonzero) digits is 1204224, while the sum is 49.

The spelling of 137487801442 in words is "one hundred thirty-seven billion, four hundred eighty-seven million, eight hundred one thousand, four hundred forty-two".