2542020045 has 16 divisors (see below), whose sum is σ = 4092188352. Its totient is φ = 1347425280.

The previous prime is 2542020043. The next prime is 2542020073. The reversal of 2542020045 is 5400202452.

It is a happy number.

It is not a de Polignac number, because 2542020045 - 2¹ = 2542020043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2542019997 and 2542020024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542020043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517396 + ... + 522285.

It is an arithmetic number, because the mean of its divisors is an integer number (255761772).

Almost surely, 2^2542020045 is an apocalyptic number.

It is an amenable number.

2542020045 is a deficient number, since it is larger than the sum of its proper divisors (1550168307).

2542020045 is a wasteful number, since it uses less digits than its factorization.

2542020045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039852.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 2542020045 is about 50418.4494505732. The cubic root of 2542020045 is about 1364.7705956978.

Adding to 2542020045 its reverse (5400202452), we get a palindrome (7942222497).

The spelling of 2542020045 in words is "two billion, five hundred forty-two million, twenty thousand, forty-five".