2542147740 has 120 divisors (see below), whose sum is σ = 8699855472. Its totient is φ = 616273920.

The previous prime is 2542147739. The next prime is 2542147781. The reversal of 2542147740 is 477412452.

2542147740 is a `hidden beast` number, since 2 + 542 + 1 + 4 + 77 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2542147695 and 2542147704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53509 + ... + 89148.

Almost surely, 2^2542147740 is an apocalyptic number.

2542147740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2542147740 is an abundant number, since it is smaller than the sum of its proper divisors (6157707732).

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

2542147740 is a wasteful number, since it uses less digits than its factorization.

2542147740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142689 (or 142678 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 36.

The square root of 2542147740 is about 50419.7157865849. The cubic root of 2542147740 is about 1364.7934477945.

The spelling of 2542147740 in words is "two billion, five hundred forty-two million, one hundred forty-seven thousand, seven hundred forty".