1401002123239 has 4 divisors (see below), whose sum is σ = 1461915259056. Its totient is φ = 1340088987424.

The previous prime is 1401002123233. The next prime is 1401002123243. The reversal of 1401002123239 is 9323212001041.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1401002123239 - 2³ = 1401002123231 is a prime.

It is a super-4 number, since 4×1401002123239⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401002123231) 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, 30456567874 + ... + 30456567919.

It is an arithmetic number, because the mean of its divisors is an integer number (365478814764).

Almost surely, 2^{1401002123239} is an apocalyptic number.

1401002123239 is a deficient number, since it is larger than the sum of its proper divisors (60913135817).

1401002123239 is an equidigital number, since it uses as much as digits as its factorization.

1401002123239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60913135816.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 1401002123239 in words is "one trillion, four hundred one billion, two million, one hundred twenty-three thousand, two hundred thirty-nine".