2542047378 has 64 divisors (see below), whose sum is σ = 5565490560. Its totient is φ = 769370112.

The previous prime is 2542047359. The next prime is 2542047379. The reversal of 2542047378 is 8737402452.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2542047379) 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, 1353376 + ... + 1355252.

It is an arithmetic number, because the mean of its divisors is an integer number (86960790).

Almost surely, 2^2542047378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2542047378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2782745280).

2542047378 is an abundant number, since it is smaller than the sum of its proper divisors (3023443182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2542047378 is a wasteful number, since it uses less digits than its factorization.

2542047378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171.

The product of its (nonzero) digits is 376320, while the sum is 42.

The square root of 2542047378 is about 50418.7205113339. The cubic root of 2542047378 is about 1364.7754872329.

The spelling of 2542047378 in words is "two billion, five hundred forty-two million, forty-seven thousand, three hundred seventy-eight".