1242050645 has 16 divisors (see below), whose sum is σ = 1626989760. Its totient is φ = 902736000.

The previous prime is 1242050639. The next prime is 1242050683. The reversal of 1242050645 is 5460502421.

It is not a de Polignac number, because 1242050645 - 2⁶ = 1242050581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92786 + ... + 105324.

It is an arithmetic number, because the mean of its divisors is an integer number (101686860).

Almost surely, 2^1242050645 is an apocalyptic number.

It is an amenable number.

1242050645 is a deficient number, since it is larger than the sum of its proper divisors (384939115).

1242050645 is a wasteful number, since it uses less digits than its factorization.

1242050645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14356.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1242050645 is about 35242.7388975375. The cubic root of 1242050645 is about 1074.9289716907.

The spelling of 1242050645 in words is "one billion, two hundred forty-two million, fifty thousand, six hundred forty-five".