245315142 has 20 divisors (see below), whose sum is σ = 549687996. Its totient is φ = 81771660.

The previous prime is 245315131. The next prime is 245315149. The reversal of 245315142 is 241513542.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245315149) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 756984 + ... + 757307.

Almost surely, 2^245315142 is an apocalyptic number.

245315142 is an abundant number, since it is smaller than the sum of its proper divisors (304372854).

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

245315142 is a wasteful number, since it uses less digits than its factorization.

245315142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514305 (or 1514296 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 245315142 is about 15662.5394492719. The cubic root of 245315142 is about 626.0006515660. Note that the first 3 decimals are identical.

Adding to 245315142 its reverse (241513542), we get a palindrome (486828684).

The spelling of 245315142 in words is "two hundred forty-five million, three hundred fifteen thousand, one hundred forty-two".