1542222451 has 8 divisors (see below), whose sum is σ = 1922770944. Its totient is φ = 1201731720.

The previous prime is 1542222443. The next prime is 1542222463.

It is a happy number.

1542222451 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 1542222451 - 2³ = 1542222443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542222401) 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 7 ways as a sum of consecutive naturals, for example, 10014355 + ... + 10014508.

It is an arithmetic number, because the mean of its divisors is an integer number (240346368).

Almost surely, 2^1542222451 is an apocalyptic number.

1542222451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1542222451 is a deficient number, since it is larger than the sum of its proper divisors (380548493).

1542222451 is a wasteful number, since it uses less digits than its factorization.

1542222451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20028881.

The product of its digits is 6400, while the sum is 28.

The square root of 1542222451 is about 39271.1401795262. The cubic root of 1542222451 is about 1155.3555999828.

It can be divided in two parts, 15422 and 22451, that added together give a palindrome (37873).

The spelling of 1542222451 in words is "one billion, five hundred forty-two million, two hundred twenty-two thousand, four hundred fifty-one".