1542228878 has 8 divisors (see below), whose sum is σ = 2334963672. Its totient is φ = 763907656.

The previous prime is 1542228871. The next prime is 1542228911. The reversal of 1542228878 is 8788222451.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542228871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3603125 + ... + 3603552.

It is an arithmetic number, because the mean of its divisors is an integer number (291870459).

Almost surely, 2^1542228878 is an apocalyptic number.

1542228878 is a deficient number, since it is larger than the sum of its proper divisors (792734794).

1542228878 is a wasteful number, since it uses less digits than its factorization.

1542228878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206786.

The product of its digits is 573440, while the sum is 47.

The square root of 1542228878 is about 39271.2220079793. Note that the first 3 decimals coincide. The cubic root of 1542228878 is about 1155.3572049091.

The spelling of 1542228878 in words is "one billion, five hundred forty-two million, two hundred twenty-eight thousand, eight hundred seventy-eight".