245211142 has 16 divisors (see below), whose sum is σ = 418701312. Its totient is φ = 106613320.

The previous prime is 245211121. The next prime is 245211143. The reversal of 245211142 is 241112542.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245211143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241798 + ... + 242809.

It is an arithmetic number, because the mean of its divisors is an integer number (26168832).

Almost surely, 2^245211142 is an apocalyptic number.

245211142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

245211142 is a deficient number, since it is larger than the sum of its proper divisors (173490170).

245211142 is a wasteful number, since it uses less digits than its factorization.

245211142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484643.

The product of its digits is 640, while the sum is 22.

The square root of 245211142 is about 15659.2190737597. The cubic root of 245211142 is about 625.9121758886.

Adding to 245211142 its reverse (241112542), we get a palindrome (486323684).

The spelling of 245211142 in words is "two hundred forty-five million, two hundred eleven thousand, one hundred forty-two".