42440401624365 has 24 divisors (see below), whose sum is σ = 73601817414840. Its totient is φ = 22623048681984.

The previous prime is 42440401624339. The next prime is 42440401624373. The reversal of 42440401624365 is 56342610404424.

42440401624365 is a `hidden beast` number, since 4 + 2 + 440 + 4 + 0 + 162 + 43 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1424139117129 + 41016262507236 = 1193373^2 + 6404394^2 .

It is not a de Polignac number, because 42440401624365 - 2¹⁹ = 42440401100077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42440401624365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246416800 + ... + 246588969.

It is an arithmetic number, because the mean of its divisors is an integer number (3066742392285).

Almost surely, 2^{42440401624365} is an apocalyptic number.

42440401624365 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42440401624365 is a deficient number, since it is larger than the sum of its proper divisors (31161415790475).

42440401624365 is a wasteful number, since it uses less digits than its factorization.

42440401624365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493007693 (or 493007690 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 45.

The spelling of 42440401624365 in words is "forty-two trillion, four hundred forty billion, four hundred one million, six hundred twenty-four thousand, three hundred sixty-five".