78072342 has 16 divisors (see below), whose sum is σ = 156699840. Its totient is φ = 25931592.

The previous prime is 78072341. The next prime is 78072343. The reversal of 78072342 is 24327087.

It is an interprime number because it is at equal distance from previous prime (78072341) and next prime (78072343).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78072341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21292 + ... + 24687.

It is an arithmetic number, because the mean of its divisors is an integer number (9793740).

Almost surely, 2^78072342 is an apocalyptic number.

78072342 is an abundant number, since it is smaller than the sum of its proper divisors (78627498).

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

78072342 is a wasteful number, since it uses less digits than its factorization.

78072342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46267.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 78072342 is about 8835.8554764097. The cubic root of 78072342 is about 427.3979182409.

The spelling of 78072342 in words is "seventy-eight million, seventy-two thousand, three hundred forty-two".