245685742 has 4 divisors (see below), whose sum is σ = 368528616. Its totient is φ = 122842870.

The previous prime is 245685733. The next prime is 245685761. The reversal of 245685742 is 247586542.

It is a happy number.

245685742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×245685742² = 120722967644181128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61421434 + ... + 61421437.

It is an arithmetic number, because the mean of its divisors is an integer number (92132154).

Almost surely, 2^245685742 is an apocalyptic number.

245685742 is a deficient number, since it is larger than the sum of its proper divisors (122842874).

245685742 is a wasteful number, since it uses less digits than its factorization.

245685742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122842873.

The product of its digits is 537600, while the sum is 43.

The square root of 245685742 is about 15674.3657606935. The cubic root of 245685742 is about 626.3157280718.

The spelling of 245685742 in words is "two hundred forty-five million, six hundred eighty-five thousand, seven hundred forty-two".