1542112451 has 12 divisors (see below), whose sum is σ = 1695998976. Its totient is φ = 1401135120.

The previous prime is 1542112427. The next prime is 1542112463.

It is a happy number.

1542112451 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-1542112451 is a prime.

It is a super-2 number, since 2×1542112451² = 4756221623058454802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1542112451.

It is not an unprimeable number, because it can be changed into a prime (1542112421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428606 + ... + 432188.

It is an arithmetic number, because the mean of its divisors is an integer number (141333248).

Almost surely, 2^1542112451 is an apocalyptic number.

1542112451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1542112451 is a deficient number, since it is larger than the sum of its proper divisors (153886525).

1542112451 is a wasteful number, since it uses less digits than its factorization.

1542112451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162 (or 7151 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

The square root of 1542112451 is about 39269.7396349912. The cubic root of 1542112451 is about 1155.3281305047.

It can be divided in two parts, 15421 and 12451, that added together give a palindrome (27872).

The spelling of 1542112451 in words is "one billion, five hundred forty-two million, one hundred twelve thousand, four hundred fifty-one".