30401442 has 12 divisors (see below), whose sum is σ = 65869830. Its totient is φ = 10133808.

The previous prime is 30401431. The next prime is 30401443. The reversal of 30401442 is 24410403.

It can be written as a sum of positive squares in only one way, i.e., 27342441 + 3059001 = 5229^2 + 1749^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1688969 = 30401442 / (3 + 0 + 4 + 0 + 1 + 4 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (30401443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 844467 + ... + 844502.

Almost surely, 2^30401442 is an apocalyptic number.

30401442 is an abundant number, since it is smaller than the sum of its proper divisors (35468388).

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

30401442 is a wasteful number, since it uses less digits than its factorization.

30401442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688977 (or 1688974 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 30401442 is about 5513.7502663795. The cubic root of 30401442 is about 312.1030847733.

Adding to 30401442 its reverse (24410403), we get a palindrome (54811845).

The spelling of 30401442 in words is "thirty million, four hundred one thousand, four hundred forty-two".