140402430 has 64 divisors (see below), whose sum is σ = 427898880. Its totient is φ = 32091552.

The previous prime is 140402417. The next prime is 140402443. The reversal of 140402430 is 34204041.

It is an interprime number because it is at equal distance from previous prime (140402417) and next prime (140402443).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35254 + ... + 39033.

It is an arithmetic number, because the mean of its divisors is an integer number (6685920).

Almost surely, 2^140402430 is an apocalyptic number.

140402430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140402430 is an abundant number, since it is smaller than the sum of its proper divisors (287496450).

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

140402430 is a wasteful number, since it uses less digits than its factorization.

140402430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74310 (or 74304 counting only the distinct ones).

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

The square root of 140402430 is about 11849.1531342961. The cubic root of 140402430 is about 519.7464617072.

Adding to 140402430 its reverse (34204041), we get a palindrome (174606471).

The spelling of 140402430 in words is "one hundred forty million, four hundred two thousand, four hundred thirty".