2521397142 has 48 divisors (see below), whose sum is σ = 5964238800. Its totient is φ = 763473600.

The previous prime is 2521397107. The next prime is 2521397159. The reversal of 2521397142 is 2417931252.

2521397142 is a `hidden beast` number, since 2 + 521 + 3 + 97 + 1 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2521397097 and 2521397106.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 302592 + ... + 310812.

It is an arithmetic number, because the mean of its divisors is an integer number (124254975).

Almost surely, 2^2521397142 is an apocalyptic number.

2521397142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2521397142 is an abundant number, since it is smaller than the sum of its proper divisors (3442841658).

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

2521397142 is a wasteful number, since it uses less digits than its factorization.

2521397142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9789 (or 9786 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2521397142 is about 50213.5155311795. The cubic root of 2521397142 is about 1361.0698656928.

The spelling of 2521397142 in words is "two billion, five hundred twenty-one million, three hundred ninety-seven thousand, one hundred forty-two".