1242641061 has 32 divisors (see below), whose sum is σ = 1962259200. Its totient is φ = 774489600.

The previous prime is 1242641053. The next prime is 1242641069. The reversal of 1242641061 is 1601462421.

1242641061 is a `hidden beast` number, since 1 + 242 + 6 + 410 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1242641053) and next prime (1242641069).

It is not a de Polignac number, because 1242641061 - 2³ = 1242641053 is a prime.

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 (1242641069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60345 + ... + 78273.

It is an arithmetic number, because the mean of its divisors is an integer number (61320600).

Almost surely, 2^1242641061 is an apocalyptic number.

It is an amenable number.

1242641061 is a deficient number, since it is larger than the sum of its proper divisors (719618139).

1242641061 is a wasteful number, since it uses less digits than its factorization.

1242641061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18106 (or 18100 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1242641061 is about 35251.1143228125. The cubic root of 1242641061 is about 1075.0992692897.

The spelling of 1242641061 in words is "one billion, two hundred forty-two million, six hundred forty-one thousand, sixty-one".