142423511505 has 32 divisors (see below), whose sum is σ = 248831049600. Its totient is φ = 68987911680.

The previous prime is 142423511497. The next prime is 142423511507. The reversal of 142423511505 is 505115324241.

It is not a de Polignac number, because 142423511505 - 2³ = 142423511497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (142423511507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238342 + ... + 584511.

It is an arithmetic number, because the mean of its divisors is an integer number (7775970300).

Almost surely, 2^142423511505 is an apocalyptic number.

142423511505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142423511505 is a deficient number, since it is larger than the sum of its proper divisors (106407538095).

142423511505 is a wasteful number, since it uses less digits than its factorization.

142423511505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823921.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 142423511505 its reverse (505115324241), we get a palindrome (647538835746).

The spelling of 142423511505 in words is "one hundred forty-two billion, four hundred twenty-three million, five hundred eleven thousand, five hundred five".