140819442469 has 4 divisors (see below), whose sum is σ = 141339071680. Its totient is φ = 140299813260.

The previous prime is 140819442451. The next prime is 140819442529. The reversal of 140819442469 is 964244918041.

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: 964244918041 = 2909 ⋅331469549.

It is a cyclic number.

It is not a de Polignac number, because 140819442469 - 2⁵ = 140819442437 is a prime.

It is a super-2 number, since 2×140819442469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140819442769) 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, 259814199 + ... + 259814740.

It is an arithmetic number, because the mean of its divisors is an integer number (35334767920).

Almost surely, 2^140819442469 is an apocalyptic number.

It is an amenable number.

140819442469 is a deficient number, since it is larger than the sum of its proper divisors (519629211).

140819442469 is an equidigital number, since it uses as much as digits as its factorization.

140819442469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519629210.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 140819442469 in words is "one hundred forty billion, eight hundred nineteen million, four hundred forty-two thousand, four hundred sixty-nine".