387421942 has 16 divisors (see below), whose sum is σ = 635167872. Its totient is φ = 176434560.

The previous prime is 387421927. The next prime is 387421943. The reversal of 387421942 is 249124783.

It is a super-2 number, since 2×387421942² = 300191522286102728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 387421895 and 387421904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387421943) 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, 182733 + ... + 184840.

It is an arithmetic number, because the mean of its divisors is an integer number (39697992).

Almost surely, 2^387421942 is an apocalyptic number.

387421942 is a deficient number, since it is larger than the sum of its proper divisors (247745930).

387421942 is a wasteful number, since it uses less digits than its factorization.

387421942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367623.

The product of its digits is 96768, while the sum is 40.

The square root of 387421942 is about 19683.0369099893. The cubic root of 387421942 is about 729.0009113575. Note that the first 3 decimals are identical.

The spelling of 387421942 in words is "three hundred eighty-seven million, four hundred twenty-one thousand, nine hundred forty-two".