245120142007 has 4 divisors (see below), whose sum is σ = 263975537560. Its totient is φ = 226264746456.

The previous prime is 245120141993. The next prime is 245120142019. The reversal of 245120142007 is 700241021542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245120142007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245120143007) 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, 9427697757 + ... + 9427697782.

It is an arithmetic number, because the mean of its divisors is an integer number (65993884390).

Almost surely, 2^245120142007 is an apocalyptic number.

245120142007 is a deficient number, since it is larger than the sum of its proper divisors (18855395553).

245120142007 is a wasteful number, since it uses less digits than its factorization.

245120142007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18855395552.

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 245120142007 its reverse (700241021542), we get a palindrome (945361163549).

The spelling of 245120142007 in words is "two hundred forty-five billion, one hundred twenty million, one hundred forty-two thousand, seven".