137040073 has 4 divisors (see below), whose sum is σ = 137805840. Its totient is φ = 136274308.

The previous prime is 137040061. The next prime is 137040091. The reversal of 137040073 is 370040731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 370040731 = 1601 ⋅231131.

It is a cyclic number.

It is not a de Polignac number, because 137040073 - 2⁵ = 137040041 is a prime.

It is a super-3 number, since 3×137040073³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137040023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382615 + ... + 382972.

It is an arithmetic number, because the mean of its divisors is an integer number (34451460).

Almost surely, 2^137040073 is an apocalyptic number.

It is an amenable number.

137040073 is a deficient number, since it is larger than the sum of its proper divisors (765767).

137040073 is an equidigital number, since it uses as much as digits as its factorization.

137040073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765766.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 137040073 is about 11706.4116192794. The cubic root of 137040073 is about 515.5639318580.

The spelling of 137040073 in words is "one hundred thirty-seven million, forty thousand, seventy-three".