140073437 has 4 divisors (see below), whose sum is σ = 160083936. Its totient is φ = 120062940.

The previous prime is 140073433. The next prime is 140073443. The reversal of 140073437 is 734370041.

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: 734370041 = 359 ⋅2045599.

It is a cyclic number.

It is not a de Polignac number, because 140073437 - 2² = 140073433 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140073433) 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, 10005239 + ... + 10005252.

It is an arithmetic number, because the mean of its divisors is an integer number (40020984).

Almost surely, 2^140073437 is an apocalyptic number.

It is an amenable number.

140073437 is a deficient number, since it is larger than the sum of its proper divisors (20010499).

140073437 is an equidigital number, since it uses as much as digits as its factorization.

140073437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010498.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 140073437 is about 11835.2624389998. The cubic root of 140073437 is about 519.3401850743.

The spelling of 140073437 in words is "one hundred forty million, seventy-three thousand, four hundred thirty-seven".