1520023142001 has 24 divisors (see below), whose sum is σ = 2538939756864. Its totient is φ = 801770447520.

The previous prime is 1520023141997. The next prime is 1520023142021. The reversal of 1520023142001 is 1002413200251.

It is not a de Polignac number, because 1520023142001 - 2² = 1520023141997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1520023142021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 397701685 + ... + 397705506.

It is an arithmetic number, because the mean of its divisors is an integer number (105789156536).

Almost surely, 2^{1520023142001} is an apocalyptic number.

It is an amenable number.

1520023142001 is a deficient number, since it is larger than the sum of its proper divisors (1018916614863).

1520023142001 is a wasteful number, since it uses less digits than its factorization.

1520023142001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795407221 (or 795407214 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 1520023142001 its reverse (1002413200251), we get a palindrome (2522436342252).

The spelling of 1520023142001 in words is "one trillion, five hundred twenty billion, twenty-three million, one hundred forty-two thousand, one".