42400470 has 32 divisors (see below), whose sum is σ = 116299008. Its totient is φ = 9691488.

The previous prime is 42400469. The next prime is 42400471. The reversal of 42400470 is 7400424.

It is an interprime number because it is at equal distance from previous prime (42400469) and next prime (42400471).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42400471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100744 + ... + 101163.

It is an arithmetic number, because the mean of its divisors is an integer number (3634344).

Almost surely, 2^42400470 is an apocalyptic number.

42400470 is an abundant number, since it is smaller than the sum of its proper divisors (73898538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42400470 is a wasteful number, since it uses less digits than its factorization.

42400470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201924.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 42400470 is about 6511.5643281780. The cubic root of 42400470 is about 348.7039686937.

Adding to 42400470 its reverse (7400424), we get a palindrome (49800894).

The spelling of 42400470 in words is "forty-two million, four hundred thousand, four hundred seventy".