1252342042154 has 8 divisors (see below), whose sum is σ = 2146872072288. Its totient is φ = 536718018060.

The previous prime is 1252342042151. The next prime is 1252342042181. The reversal of 1252342042154 is 4512402432521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1252342042154² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1252342042151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44726501492 + ... + 44726501519.

It is an arithmetic number, because the mean of its divisors is an integer number (268359009036).

Almost surely, 2^{1252342042154} is an apocalyptic number.

1252342042154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1252342042154 is a deficient number, since it is larger than the sum of its proper divisors (894530030134).

1252342042154 is an equidigital number, since it uses as much as digits as its factorization.

1252342042154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89453003020.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 1252342042154 its reverse (4512402432521), we get a palindrome (5764744474675).

The spelling of 1252342042154 in words is "one trillion, two hundred fifty-two billion, three hundred forty-two million, forty-two thousand, one hundred fifty-four".